The Bosch 3727DEVSN 6 in. Random orbit sander/polisher has an integral pad-dampening braking system to eliminate swirl marks on the finished piece. This tool provides rapid removal and an ultra-smooth finish. Any Pro who needs to sand - especially woodworkers, cabinet makers and finish carpenters - will find that the sander does the job To exacting standards and Swift results. To ensure a strong grip of the disc while in use, it employs Bosch signature hook tight hook-and-loop disc attachment. And the microcellular backing pad is pliant to ensure a smooth, fine finish on both flat and contoured surfaces alike. The sander was designed with an ergonomic soft-grip top and body. It has variable-speed control from between 4, 500 and 12, 000 OPM to match the speed to the task and includes an on-board system for filtering fine dust.