Features Flute design: a cutter with scoring tool, very suitable for cutting tight corners. The unique 2 and 2 blade design compared to conventional two-blade cutters, the cutting base has a smoother surface. HIGH CARBON STEEL MATERIAL: This spoilboard bit is made of excellent carbon steel and has a robust body that can be used repeatedly. EXTENSIVE APPLICATION The spoilboard bit with 1/4 inch shank insert provides superior performance, finer surface finish and better 90° angle clearance when used for reshaping spoilers, planing large plywood sheets, finishing wood surface, groove or slot. EXCELLENT PERFORMANCE: This cutter has a large chip space, effective chip removal, easy cutting and low milling resistance. For black Ti electroplating technology, long-lasting rust resistance and oil-free storage are available. Ideal addition: with this cutter with a cutting diameter of 1 1/4 you can refine, select and Specification: Item Type:Insert Style Spoilboard Bit 1/4" Shank Material: carbon steel, carbide Shank Diameter: 1/4" Cutting Diameter 1-1/4" (31.75mm) Cutting knife size: approx. 10 x 10 mm / 0.39 x 0.39 inches. Package list: 1 x cutter. 1 x storage box. Note: There may be slight size errors. Package List 1 x Router Bit 1 x Storage Box