M2 stylus with 0.3 mm diameter carbide ball, 3.0 mm diameter x 5.0 mm long stainless steel base, and stepped carbide stem. Minor stem diameter is 0.2 mm, intermediate diameter is 0.5 mm, and major diameter is 1.0 mm. Overall stylus length is 10.0 mm. Stylus weight is 0.24 gram.