Trend Professional Replacement Tip Cutters RT/71X1/2TC - Rota-Tip Profiler Two Flute 19.05mm Diameter x 29.5mm Cut Key Features: Shank mounted bearing profiler for template work Blade can be rotated 180 degree to give double the life of a conventional tool Cutter diameter of 19.1mm and bearing diameter of 19.05mm Specification: D: 19.1 mm (metric diameter) C: 29.5 mm (metric cut length) B: 19.05 mm (metric bearing diameter) OL: 90 mm (overall length) Shank Diameter: 1/2 inch Spare blade 2 hole: RB/C