Irwin Unibit Step Drill 3 Pc. Pro Kit (#1 #2 #3)

This IRWIN® Unibit® Step Drill 3-Pc Pro Kit combines many common bit sizes, so you don't have to switch accessories every time you need a larger hole. Its pieces are made of high-speed steel (HSS) which withstands heavy usage without any loss of control, and all of them have starter tips to eliminate center punches. This Irwin step drill bit set features straight flutes that protect thin materials while you work. Each of the pieces has markings engraved onto the sides, which show the exact measurements for each step, and the specialized tips help you maintain your position when you start to drill, so nothing slips when you add pressure. In order to create a secure hold while you work, the Irwin drill bit set's pieces have three-sided shanks that eliminate vibrations.