Irwin® HSS TCT Tip Drill Bit 11.0mm OL:142mm WL:94mm M3-B 91917 (25mm)

91917 (25mm)

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Length: 122cm (48 in)

The short lead-in on the thread chaser ensures the thread is cut as close as possible to the internal seat of the exhaust

Irwin® HSS TCT Tip Drill Bit 11.0mm OL:142mm WL:94mm M3-B 91917 (25mm)The Irwin Metric TCT (Tungsten Carbide Tipped) Drill Bits offer precision drilling with stationary machines in hardened steel, cast iron, bronze alloys and manganese alloyed steel. The C2 Carbide Tip will drill hardened material up to a hardness of 50 Rockwell C and is four facetted ground for low drilling pressure and perfect centring. The body of the drill bit is made from Chrome Vanadium Steel, hardened to 56 Rockwell C. A coolant should always be