Insize INSTCS12 12.4mm 3 Flute HSS M2 Countersink Drill~Chucks Professional die grinders used for

Professional die grinders used for precise cutting

Grip Chucks permit use on a wide range of high accuracy drilling machines

Bolt Hole Size: 25 × 13mm (slotted holes)

1830 & 2380RPM

Metallic straight spout and 450mm flexible hose with 4-Jaw coupler

Insize INSTCS12 12.4mm 3 Flute HSS M2 Countersink Drill~Chucks Professional die grinders used forInsize 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