Application: Acrylic Nylon, ABS,PE,Acetal,PET,HDPE,UHMW,Polycarbonates,Polypropylene,Wood,Soild Surface This kind of cutters are designed for cnc routers with differents models.Application: Acrylic Nylon, ABS,PE,Acetal,PET,HDPE,UHMW,Polycarbonates,Polypropylene,Wood,Soild Surface Super Solid Carbide One Flute Spiral Bits for cnc Router