Irwin 316505 Hammer Drill Bit 1/2" x 21" Marble Tops Projection : 4-3/16"

Projection : 4-3/16"

The 420 has right-angle

Creates a temporary dust barrier without the use of tape or staples

13' blade standout increases user's reach

Thermostat control

Irwin 316505 Hammer Drill Bit 1/2" x 21" Marble Tops Projection : 4-3/16"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 two cutter Tip privides faster drilling and dust removal. Highlights : Flute geometry removes dust from the hole quickly,