Features [DIFFERENT SIZES] Including 3 45° glue joint lock tabs, with different head diameters and blade depths, to meet more needs. [45° LOCKING] 45° crisscross cuts provide a strong connection and the board can be easily fixed during the tightening process. [1/2 IN TAIL ] With a 1/2 inch shank diameter and can be installed on standard engraving machines and trimming machines. [WIDE APPLICATIONS] Can be used to process MDF, solid wood, particle board, plywood, to make drawers, door frames and cabinets, etc. [CARBON STEEL] Using excellent carbon steel, with heat-resistant PTFE coating, the cutting blade is incisive and smooth. Functionality: 1. [DIFFERENT SIZE] Including 3 45° glue joint tabs, with different head diameters and blade depths, to meet more needs. 2. [45° LOCKING] 45° crisscross cuts provide a strong connection and the board can be easily fixed during the tightening process. 3. [1/2" TAIL ] With 1/2" 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 cutting blade is incisive and smooth. Specification: Item Type: 45° Router Bit Material: Carbon Steel Body + Alloy Cutting Head Specifications: Shaft diameter: 1/2 in Cutting head diameter: 1-3/8in, 2in, 2-3/4" Blade Depth: 3/4", 1", 1-1/3" Package List: 3 x router bits, 3 x storage box. Package List 3 x Router Bits 3 x Storage Box