Dremel 692 Six-Piece Router Bit Set comes with bits made from high-grade steel and packaged in a reusable plastic case. This kit is for use with the 335 plunge router and 231 shaper / router attachments. This Dremel router bit set is ideal for mortising in wood or other soft materials or for inlaying work. The variety of bit shapes included in this set enhance your accuracy and control while using your router.