IRWIN Unibit Self-Starting Single Hole Step Drill #10311ZR, 7/8″ Hole Dia., 3/8″ Shank

1 Hole Size, 7/8″ Hole Diam High Speed Steel Standard Point Step Drill Bit
3/8″ Hex Shank, Bright Finish

Features:

• UNIBIT Step Drills have an exclusive single radial concave flute.
• This design allows the drilling of perfectly round holes in thin materials quickly and with less effort.
• Each bit is constructed of industrial grade high speed molybdenum steel, and is heat treated to a hardness of between 61 – 63 RC. This assures maximum strength and long life.

Benefits:

• High Speed Steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and non-ferrous materials.
• Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
• Hex shanks are used higher speed machining operations due to its angled shape. They are constructed of six sides and fit into a quick change chuck. They are commonly made of a 1/4″ shank.

Specifications:

See all IRWIN Unibit Self-Starting Single Hole Step Drills