Irwin 10231 Self-Starting Step Drill Bit, #1 Butt Super fast drying & low

Super fast drying & low odor

cement and cinder blocks

Square corners

Material: Cold Rolled Steel

Reinforced power cord withstands jobsite abuse and lowers repair costs

Irwin 10231 Self-Starting Step Drill Bit, #1 Butt Super fast drying & lowHighlights: Drills 1 8" 1 2" holes in 1 32" increments Self starting Number of holes: 13 steps 1 4" shank (3 sided) Maximum material thickness: 1 8" Single flute cutting edge for greater control through steps Hex shank prevents slipping in drill chuck Also available with (TiN) coating for longer life New SpeedPoint tip penetrates faster than previous Unibits and prevents walking Ideal for drilling holes into thin materials such as stainless steel,