2.2A motor, 12,000 OPM. 5" discs. The Bosch ROS10 features a twist-off dust canister that with anti-spillback design that shows dust levels and easily detaches from the sander. The Bosch microfilter system traps particles as small as 1/2 micron in diameter and is the optimal system for filtering fine dust. The HookTight hook-&-loop disc attachment system has 35,000 long life hooks to ensure firm grip of standard hook-&-eye loop sanding discs (up to 2 times the standard number of hooks). The ROS10 has a comfortable soft-grip top and body to prevent hand fatigue. The integral pad dampening system prevents swirl marks on work pieces. The soft microcellular backing pad is a pliable pad that ensures a smooth, fine finish on flat or contoured surfaces. Weighs 3 lb.