The 7 PC. Impact Driver from Duralast provides a quick and effective method to free rusted and broken fasteners instantly. The impact of a hammer blow is transferred through the solid, chrome-vanadium steel driver and directly into the fastener, loosening it. Additionally, the knurled grip allows a secure grip, making it safe and easy to hold. Its compact design and included steel bits make it useful for many automotive and DIY repairs, especially when space is minimal.