Dual Action Sander features: 6" pad size diameter, free speed: 10,000 RPM; average air consumption: 8 cfm; air inlet thread: 1/4" NPTF; minimum hose size: 3/8"; andsound dBA: 85. Excellent for blending and smoothing filler, feather edging and pre-paint preparation. Lock off throttle to prevent accidental start ups and power regulator for precise control. We ship APO, FPO and combine shipping.