21/64" HSS Drill Bit Long Series Carded 2500-21/64S by Bordo Metal Diamond Cutting|Abrasive Wheels and Cups With cutting edges (hardness approx

With cutting edges (hardness approx

Perfect cuts reduce the need for reworking - With the clip-on splinter guard in combination with the guide rail

The stocks are made of Rosewood / Walnut (depending on availaibilty at time of manufacture)

comfortable handle with rubber

Specifications: Drive Shank: 11

21/64" HSS Drill Bit Long Series Carded 2500-21/64S by Bordo Metal Diamond Cutting|Abrasive Wheels and Cups With cutting edges (hardness approxBLACK FINISH (also called blue finish) A black finish is achieved by steam tempering, a thermal process resulting in a porous tool coating. This surface helps to keep lubricant on the tool, particularly important on the cutting edges, thus reducing friction and cold welding. The result is increased tool life. Black finish tools are generally recommended for ferrous applications where the oxide layer aids chip flow and heat dissipation. Specifications: