Trend Professional Bead & Reed Router Cutters Double Guided Sunk Bead Cutter - 3.2mm Radius Ref: 8/51X1/4TC Key Features: For creating a concave radius or cove in the edge of furniture and columns Specification: D: 3/4 inch (imperial diameter) D: 19.1 mm (metric diameter) C: 6.4 (metric cut length) R: 3.2 mm (metric radius) B: 12.7 mm (metric bearing diameter) OL: 61 mm (overall length) Shank Diameter: 1/4 inch