3PCS: Industrial grade chamfer drill bit set with 15°, 22.5° and 30° chamfer angle, designed for countersinking and creating miter joints at various angles. Processing: Baked-in heat-resistant coating prevents the build-up of sawdust, resin and step. High Efficiency: High hook and shear angles allow the cutters to run smoothly in producing clean, splinter-free material. Cut Precise Dice and Grooves: For shelving and cabinet projects and endless applications of simple straight cutting. Application tools Perfect woodworking tools for cutting all composition materials, MDF, wood, hardwood and softwood