Straight Refine by Ball diameter < 1 mm ≥ 1 - ≤ 1.5 mm ≥ 2 - < 3 mm ≥ 3 - < 4 mm ≥ 4 - ≤ 5 mm ≥ 6 mm Effective working length < 11 mm ≥ 11 - ≤ 29 mm ≥ 30 - ≤ 50 mm > 50 mm Probing system Renishaw Zeiss Thread M2 M3 M4 M5 Stem material Steel Ceramic Carbon fibre Tungsten carbide Tip material Ruby Zirconia Silicon nitride Tungsten carbide Diamond 12345Next >>..62 Product Unit price Add to cart M2 Ø4 mm ruby ball, ceramic stem, L 30 mm, EWL 30 mmA-5003-1370 $55.00 M4 Ø6 mm ruby ball, carbon fibre stem, L 50 mm, EWL 38.5 mmA-5003-1436 $147.00 M2 Ø4 mm ruby ball, carbon fibre stem, L 50 mm, EWL 50 mmA-5003-2285 $116.00 M2 Ø5 mm ruby ball, carbon fibre stem, L 50 mm, EWL 50 mmA-5003-2286 $121.00 M2 Ø6 mm ruby ball, carbon fibre stem, L 50 mm, EWL 50 mmA-5003-2287 $127.00 M2 Ø4 mm ruby ball, carbon fibre stem, L 100 mm, EWL 100 mmA-5003-2289 $169.00 M2 Ø5 mm ruby ball, carbon fibre stem, L 100 mm, EWL 100 mmA-5003-2290 $179.00 M2 Ø6 mm ruby ball, carbon fibre stem, L 100 mm, EWL 100 mmA-5003-2291 $189.00 M4 Ø6 mm ruby ball, ceramic stem, L 75 mm, EWL 63.5 mmA-5003-2764 $119.00 M4 Ø2 mm ruby ball, tungsten carbide stem, L 20 mm, EWL 10 mmA-5003-2932 $97.00 12345Next >>..62 Shopping security Recall your cart