Ideal for routing, inlaying, and mortising in wood and other soft materials. Features: * For best results, insert the accessory bit all the way into the tool and then back it out slightly before tightening down. This provides plenty of shank for the collet or chuck to hold onto the bit. * Secure objects to a stable surface while working * If chattering occurs, increase speed What"s In The Box: * Dremel 654 1/4-Inch Straight Router Bit