Insize INSTCS06 5mm 3 Flute HSS M2 Countersink automotive~accessories Left hand drill bits are

Left hand drill bits are primarily used for drilling out jammed or rusted bolts

12 point socket ensures correct fit and maximum surface contact area with bolts

Heavy duty industrial construction with hardened bending surfaces

Height: 114mm

Suitable for the professional automotive technician

Insize INSTCS06 5mm 3 Flute HSS M2 Countersink automotive~accessories Left hand drill bits areInsize 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