Orbital Action. Versatile. Adapts to every Surface Preparation need. Heavy duty to feather finishing. Powerful Air-Efficient Motor with 5-point suspension guarantees 44 square inches of uniform, full contact sanding. Low maintenance, high productivity. Specifications: RPM: 8500+ Wt: 5lbs. 5oz. Air Consumption: 11.4 cfm @ 90 PSI Noise Level: 89 dBa 90 Day Warranty Pad size: 2-3/4 x 16-1/2 .