Used as a base for staking, riveting and drilling small parts. Case-hardened and ground flat and smooth. Has 16 holes, graduates from 3/64″ (1.2 mm) to 1/4″ (6.4 mm), and 5 milled slots. Measures 1-5/8″ (41 mm) across the flat sides and 3/4″ (19 mm) thick.








