Step Drill Bit Set - One Bit For All

This is a step drill bit set with a 1/4" Hex Shank. It's designed with a four spiral flute to guarantee super fast and ultra smooth cutting. The drill bits are made with M35 Cobalt HSS and feature an ultra TiAIN coating for long service life. They also have a 118° split point that requires less pressure with self-centering, preventing walking