RANDOM ORBIT ACTION. Designed for today's needs. The Super Sander III offers the same ultra-fine finishing as the 4500 in a lightweight- low profile configuration. Composite motor housing and shroud reduce weight and insulate the operator from vibration. Ultra smooth motor with positive action drive and unique 4 bearing support insures full contact sanding, Oversized drive head eliminates pad wobble. 6" PSA Pad Standard. Replacement Pads: 5146 Std. 6" PSA 5246 Opt. 6" Hookit Pad 5145 Opt 5" PSA 5245 Opt. 5 Hookit Pad 5028 Opt. 8" PSA 5028H Opt. 8" Hookit Pad Other Specifications: RPM: 10000+ Wt: 2lbs. 3.5oz. Air Consumption: 11 cfm @ 90 PSI Noise Level: 80 dBa Call 800-596-9191 to order replacement pads.