High-quality alloy blade, anti-recoil design, sharp and durable. 1 or 4" shank 1-3 or 8" width 1-1 or 4" depth 3-7 or 16" overall length. Anti-recoil design, control cutting depth, safe operation. Adjust the drill height for different plate thicknesses. For making finger joints easily. Can be used to finish a variety of materials, including solid wood, MDF, particleboard, plywood, and more. Tip: 1. It is very important that the milling cutter uses the normal casing size, the tool must be fully inserted into the casing and tightened. 2. Do not partially insert the sleeve, otherwise the handle will be broken and damaged. 3. Be sure to add some coolant (such as water) during operation, In order to prevent the material temperature from being too high or even smoke due to long-term operation.