M5 stylus with 1.0 mm diameter silicon nitride ball, stepped carbide stem, and 11.0 mm diameter x 10.0 mm long stainless steel base. Major stem diameter is 1.0 mm; minor diameter is 0.8 mm. Overall stylus length is 30.0 mm. Stylus weight is 6.30 grams. Compare to Zeiss 626105-0044-033.