Irwin Tools 323018 Drill Bit, 1 x 31 x 36 SDS-max 4C
The Irwin Tools 323018- Drill Bit, 1 x 31 x 36 SDS-max 4 Cutter Masonry Drill Bit is a fast and durable bit for the professional user.  The bit features a Chrome Vanadium Spring Steel shaft that is through-hardened for Superior Durability.  The Shot-peened, double tempered finish reduces breakage.  The Bit also features a tip with a Copper brazed material that gives high heat resistance and reduced tip loss.  The SDS-max® shank fits all SDS-max® rotary hammers.  The four cutter Tip privides moredurability and rounder holes.