Impact wrenches do a great job of tightening and loosening bolts, lug nuts and rusted fasteners. They provide a very high rotational torque that regular drills are simply not capable of and deliver high torque output with minimal exertion by the user.

A digital multimeter, or DMM, measures and verifies multiple electrical stimuli, including voltage, current and resistance. It's a daily diagnostic tool used by technicians and electrical engineers and combines the features of a voltmeter, ammeter and ohmmeter.

A toolbox (also called toolkit, tool chest or workbox) is a box to organize, carry, and protect the owner's tools. They could be used for trade, a hobby or DIY, and their contents vary with the craft.

Impact wrenches do a great job of tightening and loosening bolts, lug nuts and rusted fasteners. They provide a very high rotational torque that regular drills are simply not capable of and deliver high torque output with minimal exertion by the user.

The traditional design of an anvil for use in an impact wrench includes a round portion that transitions to a square portion. The round portion is received within the impact wrench and acts as a bearing journal. The square portion is received within an impact socket.