M5 stylus, 4.0 mm ruby ball, 2.5 mm diameter carbide stem, 11.0 mm diameter x 10.0 mm long stainless steel base. Overall stylus length is 64.0 mm. Stylus weight is 9.29 grams.
EQUIVALENT TO RENISHAW PART # A-5555-0023 EQUIVALENT TO ZEISS PART # 602030-9012-000