Dremel 36-Pack 15/16" Cut Off Disc is designed for making cuts or slots in bolts. It is used with a mandrel, Dremel #402, Brinkmann's Blue Point #334508. This wheel is ideal for cutting metal with limited use on wood and plastic. Cut-Off wheels make it easy to cut or slot bolts, screws, sheet metal, thin wood and plastic. The cut-off wheel cuts only along its edge. Do not attempt to sand or cut curved holes with them.