Big Horn 19522 Sanding Drum Set lets your drill press do double duty as a spindle sander. You’ll be ready for virtually every job with this quality set of drums and sleeves. Includes five expanding drums in sizes 1/2″ by 1/2″, 3/4″ by 1″, 1″ by 1″, 1-1/2″ by 1-1/2″ and 2″ by 1-1/2″ . Also includes two sets of sleeves (two fine sets and two coarse sets). These drums will also work in hand drills for freehand sanding use. The drums are compatible with any drill or drill press with a 1/4 inch or larger chuck.