1. No-Load Speed: 4500r. P. M 2. Sander diameter: 5" / 127mm 3. Overall Length: 14.57' ' / 370mm 4. Air Inlet: 3/ 8' ' 5. Air Hose: 3/ 8' ' 6. Air Consumption: 6cfm/ 171min 7. Net weight: 2.25kg 8. Recommend Air Pressure: 6.5kg/ cm2( 90psi) 9. Packing: 10PCS/ CTN/ 2.1'