Made of high quality high speed steel for long life and exceptionally precise cuts the first time, saving you energy and stress10 router bits including straight, trim, V-groove, bead, groove, slit cut more→ter and more to meet your different needsEasy to use - large capacity chip groove and spiral cutting edge - greatly improve efficiency and product qualityShank diameter: 3mm (1/8 "), length: 38mm, easy to insert into most mini-grinding rotary tools including DREMEL, Craftsman, Chicago and moreCan be used for detailed woodworking, carving, engraving, milling, grooving, this bit is suitable for softwood and metal, including wood, ABS, acrylic, PVC, plastic , etc.