SUTTON TOOLS® D188-Series Reduced Shank Drills are designed to increase the drilling capacity of drill chucks for large scale boring applications.
These bits feature a blue surface finish which is suitable for ferrous metal drilling applications. The steam oxide finish prevents chip build-up on the cutting edges and reduces cutting friction, especially in low carbon steels.
These drills should be used at low speed (350 RPM or less).
Features

Reduced Shank - Suits 13mm (or larger) drill chucks
118° Standard Point - For general purpose applications
Made from M2 High Speed Steel (HSS) - Offers the best combination of strength, heat & wear resistance
Blue Surface Finish - For ferrous metal drilling applications

Specifications

Diameter: 21/32" (16.67 mm)
Overall Length: 152 mm (6")
Flute Length: 86 mm (3-3/8")
Reduced Shank Diameter: 12.5 mm (1/2")
Point Angle: 118° Standard