Item Type: 45 Joint Router Bit Material: Carbon Steel Body + Alloy Cutter Head Specification: Shank Diameter: 1/2in Cutter Head Diameter: 1-3/8in, 2in, 2-3/4in Blade Depth: 3/4in, 1in, 1-1/3in Package List 3 x Router Bits 3 x Storage Box 1[DIFFERENT SIZES] Including 3pcs 45 glue joint lock miters, with different head diameters and blade depths, to meet more needs. 2[45 JOINT LOCK] Interlocking 45 cuts provide strong connection, and the board can be easily fixed during the clamping process. 3[1/2IN SHANK] With 1/2in shank diameter and can be installed on standard engraving machines and trimming machines. 4[WIDE APPLICATIONS] Can be used to process MDF, solid wood, particle board, plywood, to make drawers, door frames and cabinets, etc. 5[CARBON STEEL] Using excellent carbon steel, with heat resistant PTFE coating, the cutter blade is incisive and smooth.