Bosch ROS10 120 Volt Random Orbit Sander Bosch Microfilter System - Optimal on-board system for filtering fine dust. Traps particles as small as a 1/2 micron in diameter. Twist-Off Dust Canister - Durable, compact canister shows dust level and easily detaches. Random Orbit Sanding Action - Combination of pad orbit and rotation deliver well-blended, ultra-smooth finish with fast removal rate. Soft Microcellular Backing Pad - Pliable pad ensures a smooth, fine finish on flat or contoured surfaces Low-Vibration Design - Engineered for smooth running and user comfort.