Usage Tips:Practical DIY tools: T-Slot Cutters are mainly used for wood perforation, which is very suitable for woodworking projects, such as wood cutting, wood smoothing and wood grooving. This tool is practical and necessary for carpenters. T-Shaped Design: The T-Slot Router head adopts T-shaped design, you can use it effectively avoiding damage to wood. Our T-Slot Router Bits can significantly improve your processing efficiency and reduce working time. Good compatibility: These T-shank router bits have good compatibility and are very suitable for solid wood, particle board, medium density fiberboard, plywood, etc. material: The blade part of the T shank router bits is made of YG8 tungsten steel, which has high hardness and good wear resistance. The blade is sharp and allows you to cut wood easily. The handle part is made of 45 carbon steel, which has good impact resistance. 3 different sizes: You will get 3 6.35mm Cutting Tools T-Cutter with steel blade, the cutter diameters are 7.96mm9.52mm and 12.7mm. Full size can meet most of your needs.