Neiko 30074A Air Dual Piston Straight Line Sander Free speed: 2,100 rpm. Pad Size 2 3/4" x 17 1/2". Inlet size: 1/4" NPT. Air consumption: 6cfm. Air pressure: 90-120 psi. Ideal tool for leveling, shaping, and smoothing body filler etc. Quality construction.