M5 stylus with 0.5 mm diameter carbide ball, stepped carbide stem, and 11.0 mm diameter x 10.0 long stainless steel base. Minor stem diameter is 0.3 mm, intermediate diameter is 0.5 mm, and major diameter is 1.0 mm. Overall stylus length is 25.0 mm. Stylus weight is 5.66 grams.