Variable Speed Operation Fully variable from 0-600 RPM to give you complete control in every situation. Leak Proof Inner drum prevents leakage to keep job site clean. C-1IC Cable w/Bulb Auger (5/16 x 25'). Quick acting slide chuck to lock cable. Inner drum design virtually eliminates cable flip-over and allows for quick cable change out. Premium quality, compression wound inner core cable combines strength and flexibility to resist kinking., Lot of 1