3" Pneumatic Mini Polisher/ Sander speeds you through polishing and buffing jobs in tight spots Eastwood's Mini Air Sander buffs and polishes your painted metal and plastic surfaces to a high-gloss finish. Compact size gets you into hard-to-reach areas. Runs at 2,500 rpm Variable speeds give you more control Ergonomic pistol-grip design Needs just 3 cfm at 90 psi, so works with home compressor