25/64" HSS Drill Bit Long Series Carded 2500-25/64S by Bordo Mobile Storage exceptional strength and unique crackling

exceptional strength and unique crackling effect on wood

165mm (6-1/2")

Protects against corrosion

Working Range: 130 - 705mm

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25/64" HSS Drill Bit Long Series Carded 2500-25/64S by Bordo Mobile Storage exceptional strength and unique cracklingBLACK 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: