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: 1-1/8″ (28.58 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