4 inch Gison Water Fed Air Stone Polisher Sander Model GPW 7 Kitchen New Recovery time from 95 psi Recovery time from 95 psi to 125 psi in 25 seconds 52 Number of Batteries Included 2 Color Family Yellow Number of Tools Included 4 Returnable 180 Day Cordless Tool Type Combo Kit Cordless Corded Cordless Battery Power Type Lithium Ion Tools Included Drill ) 3 Air consumption at recommended operating pressure (CFM) 8 Air Tool Type Disc Sander Compressor Air Tool Features No Additional Features Included No additional components or accessories are included Maximum sanding speed (rpm) 4500 Project Type Air Tool Combos Returnable 180 Day Recommended operating pressure (psi) 90 Housing Material Aluminum Hose Included Yes Product Length (in Spindle size: 5 8 in