Drill Bit 1/2 Reduced Shank HSS Bright 20mm

The reduced shank HSS drills are ground and then a black finish is achieved by steam tempering, a thermal process resulting in a porous tool coating. This surface aids chip flow and heat dissipation. The drill is then ground a second time to achieve a bright finish on the shank and cutting edges.

Specifications:

Diameter: 20mm
Flute Length: 89mm
Overall Length: 152mm
118° notched point
30° helix