SP Air Corporation SP-7146S 3/8-Inch Ultra Light Composite Mini Impact Wrench Ultralight weight of 2.14 pounds per unit Compact size but still offers superb power Twin hammer clutch Easy access forward and reverse button Durable and high quality construction expertly made In Japan Ultralight weight of 2.14 pounds per unit Compact size but still offers superb power Twin hammer clutch Easy access forward and reverse button Durable and high quality construction