Drillco® Combined Centre Drill & Countersink, #17, 1/4" Small Diameter, 5/8" Large Diameter, High Speed Steel Bridge Reamers They offer a non-stick surface

They offer a non-stick surface

Equipped with a short anvil

LED helps illuminate dark jobsite work areas

Not for use in potable water tanks

Drillco® Combined Centre Drill & Countersink, #17, 1/4" Small Diameter, 5/8" Large Diameter, High Speed Steel Bridge Reamers They offer a non-stick surfaceWhen 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 #17 Small Diameter 1 4" Decimal Size 0. 25" Large Diameter 5 8" Countersink Angle 60 Overall Length 3 1 4" Finish Bright Type Bell Country Of Origin China