Manufacturer Part # : 101704E
Description : RUKO step drill bit, Size 4, 12 steps (3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8in), 5% cobalt high-speed steel (HSSE-Co5), bright finish, split point, 3/8in diameter 3-surface shank.
