1. Drilling Cap: 3/ 8" / 10mm 2. No-load speed: 20000 r. P. M 3. Overall Length: 7.87' ' / 200mm 4. Air Inlet: 1/ 4' ' 5. Air Hose: 3/ 8' 6. Air Consumption: 4cfm/ 114min 7. Net weight: 0.66kgs 8. Recommend Air Pressure: 6.5kg/ cm2( 90psi) 9. Packing: 20PCS/ CTN / 0.85'