Drillco® Combined Centre Drill & Countersink, #2, 5/16" Small Diameter, 3/16" Large Diameter, High Speed SteelWhen 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 #2 Small Diameter 5 16" Decimal Size 0. 3125" Large Diameter 3 16" Countersink Angle 60 Overall Length 6" Finish Bright Type Plain Country Of Origin China

Quick-Reading 32nds

Maintains constant pressure

Removing surface defects

Semi-conductive

457 m (1500')

stainless steel & millscale

One-piece threaded shank for reduced vibration and improved balance

1-13/32" L x 5-13/16" W x 16" H

Includes pouch for storage and organization

Universal Tang

Compatible with Diablo SDS-Plus pilot bits and extensions

Drain plug allows for liquids to be safely drained