Features: High Torque Right and left switch Side exhaust Durable aluminum housing Technical Details ITEM CODE SIZE 1 2 3 4 5 WEIGHT (gr) QTY/BOX Overall Length (mm) Head Width (mm) Head Thickness (mm) Handle Diameter (mm) Inlet Size (mm) Inner (pcs) Master (pcs) AT-AR1797 3/8" 263 25 8 19 26 1.17 1 20 AT-AR1798 1/2" 263 25 12 19 27 1.17 1 20 SPECIFICATION SIZE 3/8" 1/2" Square Driver 3/8" 1/2" Free Speed 150RPM 150RPM Max. Torque 50ft-lbs 50ft-lbs Air Inlet 1/4" 1/4" Air Pressure 90psi 90psi Air Consumption 4CFM 4CFM