This turns a hammer blow into a twisting force, combined a shock impact down the axis of the shaft. They're cheaper and smaller than the powered ones. It has a square drive for sockets and an adaptor for screwdriver bits. That includes cross head, slot and Allen key shapes.

• 1/4″ Impact Screwdrivers
• 3/8″ Impact Screwdrivers
• 1/2″ Impact Screwdrivers

• Loosen a seized fastening.

• Ensure a bit adaptor is included.
• Get the largest selection of additional bits.

• Always wear eye protection.
• Consider impact protection.