Includes: You will get a deburring tool 11 extra blades a plastic box for easy storage. Sharp cutting edge for cutting, smoother machining surface. High quality: Made of high quality hardened high speed steel, these tools are adopted sharp cutting edge for cutting, the machining surface is very smooth. Easy to use: Compared with using grinding wheels or other deburring tools, since the tool uses sharp cutting edges for cutting, the machined surface has high smoothness. Blade sizes: 55mm x 3mm (L*D), handle sizes: 150mm x 30mm (L*D). The blade can be flexibly rotated 360 and is easy to install by pressing the black button. Widely used: Works on metal, steel, copper, aluminum, plastic, PVC, tin, trunking, etc. Maximum to satisfy your edge deburring need. Note: The size is measured manually, if there is an error, please understand.