Q-Mark TM2-1020-5-DS-7 Cylinder Stylus (M2, 16.5 mm)

Thread-Connector: M2

Ball Diameter: 1 mm

Tip Material: Ruby

Effective Work Length: 16.5 mm

Stem Material: Tungsten Carbide

Base Material: Steel

Base Diameter: 3.0 mm

M2 stylus with 1.0 mm diameter ruby ball, 0.7 mm diameter carbide stem, and 3.0 mm diameter x 5.0 mm long stainless steel base. Stylus length to ball center is 20.0 mm. Stylus weight is 0.32 gram.