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.