Grizzly H2881 Hand-Held Pneumatic Drum Sanders Cutter Da: 4-5/8-Inch;cutting length: 5/8-Inch;cutting width: 1-1/2-Inch Simply chuck the 3/8-Inch spindle into a portable electric drill cordless drill or air powered drill for two-handed control Choose this 4-Inch x 1-1/8-Inch diameter size for getting into tight areas