IRWIN HSS TCT Tip Drill Bits 4.5mm
is no longer available although you may find similar or newer versions below:
A coolant should always be used when drilling with TCT Twist Drill Bits
Irwin HSS TCT tip drill bit.
Specifications:Diameter: 4.5mm.Total length: 80mm.Working Length: 47mm.
The Irwin TCT (Tungsten Carbide Tipped) drill bit offers precision drilling with stationary machines in hardened steel, cast iron, bronze alloys and manganese alloyed steel