... one hand operation with side mounted F/R lever Variable speed throttle 3/8'' REVERSIBLE AIR DRILL1. Free speed: 1800rpm2 ... . Air inlet: 1/4''3. Air hose: 3/8''4. Ave. air consumption: 6cfm5. Working pressure ... : 90psi6. Weight: 1.1kgs7. 10pc H.S.S. Twist ... drill bits:1.5,2,2.5,3,3.5,4,4.5,5, ...