Irwin 10502636 Hss Tct Tip Drill Bits 4.5mm
The Irwin TCT (Tungsten Carbide Tipped) drill bit offersprecision drilling with stationary machines in hardened steel, castiron, bronze alloys and manganese alloyed steel. The C2 Carbide Tipwill drill hardened material up to a hardness of 50 Rockwell C andthe four Facetted ground for low drilling pressure and perfectcentring. The body of the drill bit is made from Chrome VanadiumSteel, Hardened to 56 Rockwell C.
A coolant should always be used when drilling with TCT TwistDrill Bits. Irwin suggest the use of a 3- 6% emulsion. The coolantwill extend the life time of the drill bit.
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