The CYCLONE MINI-POLISHING DRUM SLEEVE & ADAPTER is designed for granite and engineered stone. Ideal for tight radius. WET use only. Each sleeve measures: 3/4″D x 1-1/2″L. Dual Fitting: 1/2″ gas & 5/8″-11. RPM: 3,000. Adapter Length: 4". Adapter Fitting: 5/8″ Inner thread + 1/2″ gas out