Drillco® Combined Centre Drill & Countersink, #18, 5/16" Small Diameter, 3/4" 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 #18 Small Diameter 5 16" Decimal Size 0. 3125" Large Diameter 3 4" Countersink Angle 60 Overall Length 3 1 2" Finish Bright Type Bell Country Of Origin China

Average Air Consumption At Load

Removable soft pressure caps

Excellent cushioning characteristics and high absorbency

quality workmanship

Contains no lead

A Complete system for Displaying Slide Sledge tools

and gray irons

97% filter efficiency

High volume foaming nozzle assembly (182187)

Offers a pebble spray pattern

Economical prices

Powerful rare earth magnet