Drillco® Combined Centre Drill & Countersink, #8, 5/16" Small Diameter, 3/4" Large Diameter, High Speed Steel Suction Guns For mild steel and ferrous

For mild steel and ferrous metal

Get clear visibility of tools with yellow hi-vis internal fabric

Fully ground flutes for consistent hole sizes and fast chip evacuation

Fills minor gaps on uneven surfaces

Drillco® Combined Centre Drill & Countersink, #8, 5/16" Small Diameter, 3/4" Large Diameter, High Speed Steel Suction Guns For mild steel and ferrousWhen metal parts are machined on centres as in turning or cylindrical grinding, it is always necessary to drill and countersink the centre holes to serve as seats or bearings in the machine centres Specifications Material High Speed Steel Number Size #8 Small Diameter 5 16" Decimal Size 0. 3125" Large Diameter 3 4" Countersink Angle 60 Overall Length 6" Finish Bright Type Plain Country Of Origin China