In operation, a rotating mass is accelerated by the motor, storing energy, then suddenly connected to the output shaft (the anvil), creating a high-torque impact. The hammer mechanism is designed such that after delivering the impact, the hammer is again allowed to spin freely, and does not stay locked. With this design, the only reaction force applied to the body of the tool is the motor accelerating the hammer, and thus the operator feels very little torque, even though a very high peak torque is delivered to the socket. (This is similar to a conventional hammer, where the user applies a small, constant force to swing the hammer, which generates a very large impulse when the hammer strikes an object.) The hammer design requires a certain minimum torque before the hammer is allowed to spin separately from the anvil, causing the tool to stop hammering and instead smoothly drive the fastener if only low torque is needed, rapidly installing/removing the fastener.
Cordless Impact Wrenches, Cordless Shear Bolt Wrench, Drive Size 1/2 In., Drive Configuration Straight, Max. Torque 48 ft.-lb., Battery Included, Voltage 14.4, Series Standard, Cordless Tool Battery Type Li-Ion, Brushless Motor No, Anvil Impact Action Mechanical, Max. Blows per Minute 3200, Max. No Load RPM 2200, Cordless, Handle Type Pistol Grip, Battery Capacity 3.0Ah, Tool Length 14 In., Tool Weight 5 lb., Clutch Style Anvil, Battery Included 13P981, Battery Pack Replacement 13P981
Our Torque Wrenches offer a dependable fast and Our Torque Wrenches offer a dependable fast and accurate way to tighten fasteners in automotive agricultural and commercial/industrial applications. Reversible ratcheting heads make work easier in tight spaces and an audible signal lets you know your target torque has been reached. A slide-back adjustment collar design and large laser-etched markings ...  More + Product Details Close
Wrench is a full service auto repair shop without the shop! Our mobile mechanics service all types of cars and trucks, offering everything from oil changes and tune ups to brake jobs and no-starts. Our ASE certified mechanics can perform most jobs right in your driveway or at your parking spot at work giving you the freedom to spend your time on more important things.

The XWT04Z delivers high-torque impact power with a The XWT04Z delivers high-torque impact power with a 1/2 in. square drive that will fit impact-rated socket sets. The versatile BTW450Z packs plenty of torque for a wide range of fastening and loosening tasks. This Impact Wrench is a powerful and convenient substitute for air powered and AC wrenches.  More + Product Details Close