Features and Benefits: * Unique Thru the pad water feed floats the pad on a fluid film effecting uniform grit penetration for ultra-surfacing or heavy duty sanding. * 20 high-pressure hose connected to water source ensures constant adjusted flow. * High Performance, Air-Efficient Motor with sealed 4-bearing shaft assures full-pad contact, maximum productivity. * Comes complete with pierce plate, water hose, and choice of pad sizes.