Irwin Unibit High Speed Steel Step Drill Set - Four Piece Set

Each bit features a radial concave flute to provide greater control, minimize vibration and to drill truest, most round holes in various materials
3-flatted chuck to prevent chuck slippage
Speedpoint® Tip for fast starting
Laser marked sizes won’t wear off
Set includes: one #1 (13 hole sizes 1/8” -1/2”) in 1/32” increments, one #2 (6 hole sizes 3/16”-1/2”) in 1/16” increments, one #3 (9 hole sizes 1/4" -3/4”) 1/16” increments and one #21 (10 hole sizes 13/16” – 1-3/8”0 in 1/16” increments, including hole enlarging

Brand : Irwin