Drills

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Hardplate and Cobalt Drill Bits

Cobalt drill bits : . Ideal for drilling cylinder locks. Cobalt steel alloys are variations on high speed steel which contain more cobaltThey hold their hardness at much higher temperatures, and are used to drill stainless steel and other hard materials.


Hardplate drill bits : Ideal for drilling hard plate mortice locks. Tungsten carbide and other carbides are extremely hard, and can drill virtually all materials while holding an edge longer than other bits. The material is expensive and much more brittle than steels; consequently they are mainly used for drill bit tips.


Cobalt
Cobalt
Hard Plate
Hard Plate

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