Insize INSTCS1 6 Piece 3 Flute HSS M2 Countersink Set Testing~Detection~Tools With features like self push-in

With features like self push-in full extension draws with ball bearing slides and dual gas struts on lids help make them the ultimate in design and quality

flip reverse lever

Full cast iron wheel with solid roller bearings for maximum strength and durability

hardened and tempered for strength with a fully polished chrome plated finish for corrosion resistance

This model features a grey rubber moulded wheel with a steel core centre

Insize INSTCS1 6 Piece 3 Flute HSS M2 Countersink Set Testing~Detection~Tools With features like self push-inInsize Countersinks are made from 100% M42 Cobalt High Speed Steel. They are used for countersinking holes and deburring in a wide variety of materials including ferrous and non ferrous metals. The triple, wide angled fluted design is self centering allowing the user to provide a heavy, 90 degree, chamfer to the entrance of a drilled hole. This chamfer may also be required to allow the correct seating of a countersink head screw or to provide the lead