AIRCAT 1000-TH-2 1/2-Inch Composite Air Impact Wrench with Twin Hammer Mechanism and Extended 2-Inch Anvil Quiet and reliable tire impact wrench Twin hammer mechanism; Durable composite housing Ergonomically designed handle (reduces operator fatigue); Patented through-the-handle exhaust (keeps debris away from face) Patented quiet technology (86 decibels) Easy operation flip lever - forward and reverse