Trend Professional Straight Flute Router Cutter 3/72x1/2TC - 2 Flute Tungsten Carbide Cutter 12mm diameter x 38mm cut x 1/2" shank Main areas of use: Use TCT for abrasive materials such as chipboard, MDF, plywood, hardwoods and hard plastics Key Features: Two flutes give a clean finish to cut edges All cutters above and including 9.5mm diameter, have TCT plunge centre tips Specification: D: 15/32 inch (imperial diameter) D: 12 mm (metric diameter) C: 38 mm (cut length) OL: 80 mm (overall length) Shank Diameter: 1/2" inch Grade: TCT (Tungsten Carbide Tipped)