Subland Step Drill Bit: 4-1/4" OAL MPN:371 8

A subland step drill bit is a type of twist drill designed to create both through holes and countersinks with one step. With an overall length of 4-1/4 inches, this high-speed steel drill bit offers versatility for professional machinists, toolmakers, and hobbyists in various industries. Its unique construction features a split point that starts on contact, reducing the need for center punching or pilot holes while minimizing wandering. Its stepped design allows it to drill holes precisely without burrs or rough edges, eliminating the need for secondary operations such as deburring. This subland step drill bit excels in metalworking, woodworking, and general manufacturing environments where precise, clean-cutting hole making is essential.