Irwin Tools 10235 Unibit® 10-Hole High Speed Step Drill, 1/4" - 1-3/8" Trending_Items drywall or any surface requiring

drywall or any surface requiring a permanently flexible seal

High tech boron hardened shackle

For ages 1-1/2+ years

3" in length

Shank size: 7/16"

Irwin Tools 10235 Unibit® 10-Hole High Speed Step Drill, 1/4" - 1-3/8" Trending_Items drywall or any surface requiringIdeal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates. Features 3 flatted shank, shank size 1 2". Single fluted cutting edge assures true round holes & allows greater control. Hole sizes: 1 4" 1 3 8" Maximum material thickness: 1 8" Number of holes: 10 steps 3 flatted shank Shank size 3 8" In 1 8" increments Single fluted cutting edge assures true round holes & allows greater control Ideal