Type: Router Bit Set Material: YG6 Alloy + 45# Carbon Steel + Plastic Spray Surface Shank: 8mm, 1/2inch, 1/4inch (Optional) Features: Wood Cutter, Woodworking Tool, Solid, Durable Router Bit Size: 5.6cm x 3.49cm/2.2" x 1.37" (Approx.) Specifications: Solid material makes it sturdy and strong to work for a very long time. It is great tool for tenoning of wooden boards and puzzles. There are several size for you to choose from to meet your different needs. Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Router Bit 1 x Wrench 6 x Bearing