Silicon Nitride

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A-5003-5732M5 Ø2 mm Silicon Nitride ball, tungsten carbide stem, L 20 mm, EWL 11 mm $79.98
A-5004-1922M2 Ø8 mm Silicon Nitride ball, stainless steel stem, L 11 mm, EWL 11 mm $104.16
A-5004-0237M2 Ø6 mm Silicon Nitride ball, stainless steel stem, L 10 mm, EWL 10 mm $72.54
A-5004-1921M2 Ø5 mm Silicon Nitride ball, stainless steel stem, L 10 mm, EWL 10 mm $72.54
A-5003-9524M2 Ø4 mm Silicon Nitride ball, stainless steel stem, L 10 mm, EWL 10 mm $64.17
A-5003-2138M2 Ø3 mm Silicon Nitride ball, stainless steel stem, L 10 mm, EWL 7 mm $64.17
A-5004-1920M2 Ø2.5 mm Silicon Nitride ball, stainless steel stem, L 10 mm, EWL 6.5 mm $64.17
A-5003-6120M2 Ø2 mm Silicon Nitride ball, stainless steel stem, L 10 mm, EWL 6 mm $64.17
A-5004-1918M2 Ø1.5 mm Silicon Nitride ball, stainless steel stem, L 10 mm, EWL 4.5 mm $64.17
A-5004-0210M2 Ø1 mm Silicon Nitride ball, stainless steel stem, L 10 mm, EWL 4.5 mm $49.29
A-5004-0236M2 Ø4 mm Silicon Nitride ball, stainless steel stem, L 20 mm, EWL 20 mm $64.17
A-5004-6691M2 Ø3 mm Silicon Nitride ball, stainless steel stem, L 20 mm, EWL 17 mm $67.89
A-5004-1923M2 Ø2.5 mm Silicon Nitride ball, stainless steel stem, L 20 mm, EWL 16.4 mm $64.17
A-5003-1730M2 Ø2 mm Silicon Nitride ball, stainless steel stem, L 20 mm, EWL 14 mm $70.68
A-5004-2018M2 Ø1 mm Silicon Nitride ball, tungsten carbide stem, L 10 mm, EWL 4 mm $64.17
A-5003-2020M2 Ø0.5 mm Silicon Nitride ball, tungsten carbide stem, L 10 mm, EWL 3 mm $157.17
A-5004-2016M2 Ø0.3 mm Silicon Nitride ball, tungsten carbide stem, L 10 mm, EWL 2 mm $175.77
A-5004-1930M2 Ø5 mm Silicon Nitride ball, tungsten carbide stem, L 20 mm, EWL 20 mm $88.35
A-5004-1929M2 Ø4 mm Silicon Nitride ball, tungsten carbide stem, L 22 mm, EWL 22 mm $79.98
A-5004-1021M2 Ø3 mm Silicon Nitride ball, tungsten carbide stem, L 20 mm, EWL 17 mm $79.98
A-5004-1928M2 Ø2.5 mm Silicon Nitride ball, tungsten carbide stem, L 20 mm, EWL 15.5 mm $79.98
A-5004-1017M2 Ø2 mm Silicon Nitride ball, tungsten carbide stem, L 20 mm, EWL 14 mm $100.44
A-5004-1925M2 Ø1.5 mm Silicon Nitride ball, tungsten carbide stem, L 20 mm, EWL 12.5 mm $79.98
A-5004-2021M2 Ø1 mm Silicon Nitride ball, tungsten carbide stem, L 20 mm, EWL 12.5 mm $79.98
A-5004-2019M2 Ø0.5 mm Silicon Nitride ball, tungsten carbide stem, L 20 mm, EWL 7 mm $157.17
A-5004-1945M2 Ø5 mm Silicon Nitride ball, tungsten carbide stem, L 30 mm, EWL 30 mm $88.35
A-5004-1944M2 Ø4 mm Silicon Nitride ball, tungsten carbide stem, L 30 mm, EWL 30 mm $79.98
A-5004-1933M2 Ø3 mm Silicon Nitride ball, tungsten carbide stem, L 30 mm, EWL 27 mm $79.98
A-5004-1932M2 Ø2.5 mm Silicon Nitride ball, tungsten carbide stem, L 30 mm, EWL 22.5 mm $79.98
A-5003-7573M2 Ø2 mm Silicon Nitride ball, tungsten carbide stem, L 30 mm, EWL 22.5 mm $79.98
A-5004-1931M2 Ø1.5 mm Silicon Nitride ball, tungsten carbide stem, L 30 mm, EWL 22.5 mm $79.98
A-5004-2022M2 Ø1 mm Silicon Nitride ball, tungsten carbide stem, L 27.5 mm, EWL 20.5 mm $79.98
A-5004-1962M2 Ø5 mm Silicon Nitride ball, tungsten carbide stem, L 40 mm, EWL 40 mm $88.35
A-5004-1961M2 Ø4 mm Silicon Nitride ball, tungsten carbide stem, L 40 mm, EWL 40 mm $79.98
A-5004-1960M2 Ø3 mm Silicon Nitride ball, tungsten carbide stem, L 40 mm, EWL 37 mm $79.98
A-5004-1959M2 Ø2.5 mm Silicon Nitride ball, tungsten carbide stem, L 40 mm, EWL 32.5 mm $79.98
A-5003-7269M2 Ø2 mm Silicon Nitride ball, tungsten carbide stem, L 40 mm, EWL 32.5 mm $132.99
A-5004-1965M2 Ø5 mm Silicon Nitride ball, tungsten carbide stem, L 50 mm, EWL 50 mm $88.35
A-5004-1964M2 Ø4 mm Silicon Nitride ball, tungsten carbide stem, L 50 mm, EWL 50 mm $79.98
A-5004-1963M2 Ø3 mm Silicon Nitride ball, tungsten carbide stem, L 50 mm, EWL 47 mm $79.98
A-5004-1954M2 Ø6 mm Silicon Nitride ball, ceramic stem, L 30 mm, EWL 30 mm $112.53
A-5004-1953M2 Ø5 mm Silicon Nitride ball, ceramic stem, L 30 mm, EWL 30 mm $104.16
A-5004-1952M2 Ø4 mm Silicon Nitride ball, ceramic stem, L 30 mm, EWL 30 mm $95.79
A-5004-1946M2 Ø3 mm Silicon Nitride ball, ceramic stem, L 30 mm, EWL 27 mm $95.79
A-5004-1969M2 Ø6 mm Silicon Nitride ball, ceramic stem, L 50 mm, EWL 50 mm $186.93
A-5004-1968M2 Ø5 mm Silicon Nitride ball, ceramic stem, L 50 mm, EWL 50 mm $104.16
A-5004-1519M2 Ø4 mm Silicon Nitride ball, ceramic stem, L 50 mm, EWL 50 mm $106.95
A-5004-1967M2 Ø3 mm Silicon Nitride ball, ceramic stem, L 50 mm, EWL 47 mm $95.79
A-5004-1957M2 Ø6 mm Silicon Nitride ball, carbon fiber stem, L 30 mm, EWL 30 mm $112.53
A-5004-1956M2 Ø5 mm Silicon Nitride ball, carbon fiber stem, L 30 mm, EWL 30 mm $104.16
A-5004-1955M2 Ø4 mm Silicon Nitride ball, carbon fiber stem, L 30 mm, EWL 30 mm $95.79
A-5004-1972M2 Ø6 mm Silicon Nitride ball, carbon fiber stem, L 50 mm, EWL 50 mm $112.53
A-5004-1971M2 Ø5 mm Silicon Nitride ball, carbon fiber stem, L 50 mm, EWL 50 mm $104.16
A-5004-1970M2 Ø4 mm Silicon Nitride ball, carbon fiber stem, L 50 mm, EWL 50 mm $95.79
A-5004-1975M2 Ø6 mm Silicon Nitride ball, carbon fiber stem, L 75 mm, EWL 75 mm $112.53
A-5004-1974M2 Ø5 mm Silicon Nitride ball, carbon fiber stem, L 75 mm, EWL 75 mm $112.53
A-5004-1973M2 Ø4 mm Silicon Nitride ball, carbon fiber stem, L 75 mm, EWL 75 mm $112.53
A-5004-1978M2 Ø6 mm Silicon Nitride ball, carbon fiber stem, L 100 mm, EWL 100 mm $128.34
A-5004-1977M2 Ø5 mm Silicon Nitride ball, carbon fiber stem, L 100 mm, EWL 100 mm $112.53
A-5004-1976M2 Ø4 mm Silicon Nitride ball, carbon fiber stem, L 100 mm, EWL 100 mm $112.53
A-5555-3891M3 180° 1/2 star stylus, Ø3 mm silicon nitride ball, carbon fiber stem, ML 31 mm, for Zeiss applications $296.67
A-5555-3890M3 180° 1/2 star stylus, Ø3 mm silicon nitride ball, carbon fiber stem, ML 21 mm, for Zeiss applications $292.02
A-5555-3889M3 180° 1/2 star stylus, Ø3 mm silicon nitride ball, carbon fiber stem, ML 11 mm, for Zeiss applications $287.37
A-5004-0654M3 180° 1/2 star stylus, Ø3 mm ruby ball, carbon fiber stem, ML 31 mm, for Zeiss applications $258.54
A-5555-3885M3 90° 1/2 star stylus, Ø3 mm silicon nitride ball, carbon fiber stem, ML 21 mm, for Zeiss applications $292.02
A-5555-3884M3 90° 1/2 star stylus, Ø3 mm silicon nitride ball, carbon fiber stem, ML 11 mm, for Zeiss applications $287.37
A-5004-3284M3 90° 1/2 star stylus, Ø3 mm ruby ball, carbon fiber stem, ML 31 mm, for Zeiss applications $296.67
A-5555-3881M3 1/4 star stylus, Ø3 mm silicon nitride ball, carbon fiber stem, ML 21 mm, for Zeiss applications $150.66
A-5555-3880M3 1/4 star stylus, Ø3 mm silicon nitride ball, carbon fiber stem, ML 11 mm, for Zeiss applications $146.01
A-5555-3879M3 Ø3 mm silicon nitride ball, carbon fiber stem, L 40 mm, ML 31 mm, for Zeiss applications $105.09
A-5555-3878M3 clamping stylus XXT Ø3 mm silicon nitride ball, carbon fiber stem, L 30 mm, ML 21 mm, for Zeiss applications $102.30
A-5555-3877M3 clamping stylus XXT Ø3 mm silicon nitride ball, carbon fiber stem, L 20 mm, ML 11 mm, for Zeiss applications $96.72
A-5004-3282M3 Ø3 mm ruby ball, carbon fiber stem, L 40 mm, ML 31 mm, for Zeiss applications $102.30
A-5004-4635M3 XXT Ø8 mm silicon nitride ball, carbon fiber stem, L 70 mm, ML 70 mm, for Zeiss applications $134.85
A-5004-1858M3 XXT Ø5 mm silicon nitride ball, carbon fiber stem, L 75 mm, ML 66 mm, for Zeiss applications $128.34
A-5555-3872M3 XXT Ø5 mm silicon nitride ball, carbon fiber stem, L 50 mm, ML 41 mm, for Zeiss applications $124.62
A-5555-3871M3 XXT Ø3 mm silicon nitride ball, carbon fiber stem, L 50 mm, ML 41 mm, for Zeiss applications $117.18
A-5555-3870M3 XXT Ø3 mm silicon nitride ball, carbon fiber stem, L 33 mm, ML 24 mm, for Zeiss applications $113.46
A-5004-0808M3 XXT Ø8 mm ruby ball, carbon fiber stem, L 125 mm, ML 125 mm, for Zeiss applications $150.66
A-5555-3825M5 Ø10 mm silicon nitride ball, thermostable Carbon Fiber stem, L 150 mm, ML 137 mm, for Zeiss applications $197.16
A-5555-3824M5 Ø10 mm silicon nitride ball, thermostable Carbon Fiber stem, L 65.5 mm, ML 52.5 mm, for Zeiss applications $164.61
A-5555-2403M5 Ø9 mm silicon nitride ball, thermostable Carbon Fiber stem, L 64.5 mm, ML 51.5 mm, for Zeiss applications $104.16
A-5555-3822M5 Ø9 mm silicon nitride ball, thermostable Carbon Fiber stem, L 51.5 mm, ML 64.5 mm, for Zeiss applications $132.99
A-5555-1179M5 Ø8 mm silicon nitride ball, thermostable Carbon Fiber stem, L 200 mm, ML 187 mm, for Zeiss applications $185.07
A-5555-1169M5 Ø8 mm silicon nitride ball, thermostable Carbon Fiber stem, L 150 mm, ML 137 mm, for Zeiss applications $171.12
A-5555-3821M5 Ø8 mm silicon nitride ball, thermostable Carbon Fiber stem, L 114.5 mm, ML 101.5 mm, for Zeiss applications $139.50
A-5555-3820M5 Ø8 mm silicon nitride ball, thermostable Carbon Fiber stem, L 100 mm, ML 87 mm, for Zeiss applications $136.71
A-5555-2010M5 Ø8 mm silicon nitride ball, thermostable Carbon Fiber stem, L 75.0 mm, ML 62.0 mm, for Zeiss applications $131.13
M5 Ø8 mm silicon nitride ball, thermostable Carbon Fiber stem, L 75.0 mm, ML 62.0 mm, for Zeiss applications$133.00
A-5555-0720M5 Ø8 mm silicon nitride ball, thermostable Carbon Fiber stem, L 63.5 mm, ML 50.5 mm, for Zeiss applications $130.20
A-5555-3819M5 Ø7 mm silicon nitride ball, thermostable Carbon Fiber stem, L 55.0 mm, ML 45.0 mm, for Zeiss applications $121.83
A-5555-3818M5 Ø6 mm silicon nitride ball, thermostable Carbon Fiber stem, L 54.0 mm, ML 44.0 mm, for Zeiss applications $108.81
A-5555-9045M5 Ø5 mm silicon nitride ball, thermostable Carbon Fiber stem, L 100.0 mm, ML 90.0 mm, for Zeiss applications $121.83
A-5555-2012M5 Ø5 mm silicon nitride ball, thermostable Carbon Fiber stem, L 75 mm, ML 65 mm, for Zeiss applications $105.09
A-5555-0759M5 Ø5 mm silicon nitride ball, thermostable Carbon Fiber stem, L 53 mm, ML 43 mm, for Zeiss applications $103.23
A-5555-3817M5 Ø5 mm silicon nitride ball, thermostable Carbon Fiber stem, L 50 mm, ML 40 mm, for Zeiss applications $103.23
A-5555-3816M5 Ø4 mm silicon nitride ball, thermostable Carbon Fiber stem, L 64.0 mm, ML 54.0 mm, for Zeiss applications $109.74
A-5555-3815M5 Ø4 mm silicon nitride ball, thermostable Carbon Fiber stem, L 33.5 mm, ML 23.5 mm, for Zeiss applications $106.95
A-5555-3814M5 Ø3 mm silicon nitride ball, thermostable Carbon Fiber stem, L 58 mm, ML 48 mm, for Zeiss applications $102.30
A-5555-3813M5 Ø3 mm silicon nitride ball, thermostable Carbon Fiber stem, L 50 mm, ML 40 mm, for Zeiss applications $92.07
M5 Ø3 mm silicon nitride ball, thermostable Carbon Fiber stem, L 33.5 mm, ML 23.5 mm, for Zeiss applications$92.15
M5 Ø3 mm silicon nitride ball, thermostable Carbon Fiber stem, L 33.5 mm, ML 23.5 mm, for Zeiss applications$91.20
A-5555-1828M5 Ø3 mm silicon nitride ball, thermostable Carbon Fiber stem, L 33.5 mm, ML 23.5 mm, for Zeiss applications $90.21
A-5555-3812M5 Ø3 mm silicon nitride ball, thermostable Carbon Fiber stem, L 25 mm, ML 15 mm, for Zeiss applications $89.28
A-5555-0644M5 Ø10 mm ruby ball, thermostable Carbon Fiber stem, L 200 mm, ML 187 mm, for Zeiss applications $190.65
A-5555-3804M5 Ø10 mm silicon nitride ball, tungsten carbide stem, L 150 mm, ML 135 mm, for Zeiss applications $103.23
A-5555-3803M5 Ø10 mm silicon nitride ball, tungsten carbide stem, L 118 mm, ML 105 mm, for Zeiss applications $100.44
A-5555-3802M5 Ø10 mm silicon nitride ball, tungsten carbide stem, L 65.5 mm, ML 52.5 mm, for Zeiss applications $90.21
A-5555-3801M5 Ø9 mm silicon nitride ball, tungsten carbide stem, L 64.5 mm, ML 51.5 mm, for Zeiss applications $80.91
A-5555-3800M5 Ø8 mm silicon nitride ball, tungsten carbide stem, L 114.5 mm, ML 101.5 mm, for Zeiss applications $87.42
A-5555-3799M5 Ø8 mm silicon nitride ball, tungsten carbide stem, L 100 mm, ML 87 mm, for Zeiss applications $82.77
A-5555-3798M5 Ø8 mm silicon nitride ball, tungsten carbide stem, L 75 mm, ML 62 mm, for Zeiss applications $79.05
A-5555-3797M5 Ø8 mm silicon nitride ball, tungsten carbide stem, L 63.5 mm, ML 50.5 mm, for Zeiss applications $68.82
A-5555-3796M5 Ø7 mm silicon nitride ball, tungsten carbide stem, L 55 mm, ML 45 mm, for Zeiss applications $68.82
A-5555-3784M5 Ø2 mm silicon nitride ball, tungsten carbide stem, L 40 mm, ML 30 mm, for Zeiss applications $48.36
A-5555-3783M5 Ø2 mm silicon nitride ball, tungsten carbide stem, L 30 mm, ML 20 mm, for Zeiss applications $48.36
A-5555-3782M5 Ø2 mm silicon nitride ball, tungsten carbide stem, L 25 mm, ML 15 mm, for Zeiss applications $48.36
A-5555-3781M5 Ø2 mm silicon nitride ball, tungsten carbide stem, L 20 mm, ML 10 mm, for Zeiss applications $48.36
A-5555-3780M5 Ø1.5 mm silicon nitride ball, tungsten carbide stem, L 30 mm, ML 8.0/20.0 mm, for Zeiss applications $48.36
A-5555-3779M5 Ø1 mm silicon nitride ball, tungsten carbide stem, L 30 mm, ML 5.0/20.0 mm, for Zeiss applications $48.36
A-5555-3778M5 Ø1 mm silicon nitride ball, tungsten carbide stem, L 25 mm, ML 5.0/15.0 mm, for Zeiss applications $48.36
A-5555-3777M5 Ø1 mm silicon nitride ball, tungsten carbide stem, L 20 mm, ML 5.0/10.0 mm, for Zeiss applications $48.36
A-5003-5734M5 Ø6 mm Silicon nitride ball, Carbon Fiber stem, L 50 mm, EWL 39.5 mm $124.62
A-5003-5733M5 Ø4 mm Silicon Nitride ball, tungsten carbide stem, L 20 mm, EWL 11.9 mm $87.42
M5 Ø2 mm Silicon Nitride ball, tungsten carbide stem, L 20 mm, EWL 11 mm
A-5003-5731M4 Ø6 mm Silicon Nitride ball, stainless steel stem, L 100 mm, EWL 88.50 mm $223.20
A-5003-5730M4 Ø6 mm Silicon Nitride ball, stainless steel stem, L 50 mm, EWL 38.50 mm $205.53
A-5003-5728M4 Ø2 mm Silicon Nitride ball, stainless steel stem, L 19 mm, EWL 9.20 mm $66.03
A-5003-5729M4 Ø4 mm Silicon Nitride ball, stainless steel stem, L 18 mm, EWL 13.7 mm $58.59
A-5004-1998M3 Ø12.0 mm Silicon Nitride ball, carbon fiber stem, L 200 mm, EWL 200 mm $288.30
A-5004-1995M3 Ø10.0 mm Silicon Nitride ball, carbon fiber stem, L 200 mm, EWL 200 mm $272.49
A-5004-1997M3 Ø12.0 mm Silicon Nitride ball, carbon fiber stem, L 150 mm, EWL 150 mm $288.30
A-5004-1994M3 Ø10.0 mm Silicon Nitride ball, carbon fiber stem, L 150 mm, EWL 150 mm $272.49
A-5004-1996M3 Ø12.0 mm Silicon Nitride ball, carbon fiber stem, L 100 mm, EWL 100 mm $288.30
A-5004-1993M3 Ø10.0 mm Silicon Nitride ball, carbon fiber stem, L 100 mm, EWL 100 mm $272.49
A-5004-5466M3 Ø8.0 mm Silicon Nitride ball, carbon fiber stem, L 100 mm, EWL 100 mm $144.15
A-5004-1991M3 Ø6.0 mm Silicon Nitride ball, carbon fiber stem, L 100 mm, EWL 100 mm $136.71
A-5004-1992M3 Ø10.0 mm Silicon Nitride ball, carbon fiber stem, L 75 mm, EWL 75 mm $272.49
A-5003-5727M3 Ø8.0 mm Silicon Nitride ball, carbon fiber stem, L 75 mm, EWL 75 mm $136.71
A-5003-5726M3 Ø6.0 mm Silicon Nitride ball, carbon fiber stem, L 75 mm, EWL 75 mm $119.97
A-5004-1990M3 Ø5.0 mm Silicon Nitride ball, ceramic stem, L 50 mm, EWL 50 mm $104.16
A-5003-5725M3 Ø4.0 mm Silicon Nitride ball, ceramic stem, L 50 mm, EWL 46 mm $95.79
A-5004-1989M3 Ø3.0 mm Silicon Nitride ball, ceramic stem, L 50 mm, EWL 43 mm $95.79
A-5004-1201M3 Ø5.0 mm Silicon Nitride ball, tungsten carbide stem, L 50 mm, EWL 50 mm $88.35
A-5004-1988M3 Ø4.0 mm Silicon Nitride ball, tungsten carbide stem, L 50 mm, EWL 46 mm $142.29
A-5004-1199M3 Ø3.0 mm Silicon Nitride ball, tungsten carbide stem, L 50 mm, EWL 43.70 mm $79.98
A-5004-1718M3 Ø5.0 mm Silicon Nitride ball, tungsten carbide stem, L 40 mm, EWL 40 mm $178.56
A-5004-1195M3 Ø4.0 mm Silicon Nitride ball, tungsten carbide stem, L 40 mm, EWL 36 mm $79.98
A-5004-1987M3 Ø3.0 mm Silicon Nitride ball, tungsten carbide stem, L 40 mm, EWL 33.70 mm $79.98
A-5004-1986M3 Ø2.5 mm Silicon Nitride ball, tungsten carbide stem, L 40 mm, EWL 32.50 mm $79.98
A-5004-1985M3 Ø2.0 mm Silicon Nitride ball, tungsten carbide stem, L 40 mm, EWL 32.50 mm $79.98
A-5004-1984M3 Ø3.0 mm Silicon Nitride ball, tungsten carbide stem, L 30 mm, EWL 24 mm $79.98
A-5004-1983M3 Ø2.5 mm Silicon Nitride ball, tungsten carbide stem, L 30 mm, EWL 22.50 mm $79.98
A-5003-5724M3 Ø2 mm Silicon Nitride ball, tungsten carbide stem, L 30 mm, EWL 22.80 mm $79.98
A-5003-8091M3 Ø1.5 mm Silicon Nitride ball, tungsten carbide stem, L 30 mm, EWL 22.50 mm $125.55
A-5004-1982M3 Ø2.5 mm Silicon Nitride ball, tungsten carbide stem, L 20.20 mm, EWL 12.50 mm $79.98
A-5004-1198M3 Ø1.5 mm Silicon Nitride ball, tungsten carbide stem, L 20 mm, EWL 12.50 mm $79.98
A-5004-2023M3 Ø0.5 mm Silicon Nitride ball, tungsten carbide stem, L 21 mm, EWL 2 mm $300.39
A-5004-1981M3 Ø5 mm Silicon Nitride ball, stainless steel stem, L 31 mm, EWL 31 mm $72.54
A-5004-1980M3 Ø4 mm Silicon Nitride ball, stainless steel stem, L 31 mm, EWL 27 mm $64.17
A-5003-6695M3 Ø5 mm Silicon Nitride ball, stainless steel stem, L 21 mm, EWL 21 mm $72.54
A-5003-5061M3 Ø4 mm Silicon Nitride ball, stainless steel stem, L 21 mm, EWL 17.20 mm $64.17
A-5003-6257M3 Ø3 mm Silicon Nitride ball, stainless steel stem, L 21 mm, EWL 14.70 mm $64.17
A-5003-5723M3 Ø2 mm Silicon Nitride ball, stainless steel stem, L 21 mm, EWL 9.60 mm $64.17
A-5004-1979M3 Ø1 mm Silicon Nitride ball, stainless steel stem, L 21 mm, EWL 4 mm $64.17
A-5004-1508M2 Ø1 mm Silicon Nitride ball, tungsten carbide stem, L 20 mm, EWL 7 mm $79.98