TCT for abrasive materials such as chipboard, MDF, plywood, hardwoods and hard plastics. Two flutes give a clean finish to cut edges. Has a TCT plunge centre tip. Dimensions: D=9/16 inch D=14.3 mm C=25 mm OL=58 mm Shank Diameter=1/4 inch Shank Diameter: 1/4 Diameter Imperial: 9/16 Diameter Metric: 14.3 Cut Length Metric: 25 Overall Length Metric: 58