Made to withstand more torque than other bits, impact bits (AKA impact driver bits) have a hex shank and fit into the collet of an impact driver. An impact driver is a hand held power tool that drives screws and bolts that require a higher torque than that provided by standard drill drivers. It uses lateral impact, twisting the screw with impact. Zoro supplies a variety of impact bits and bit sets, including star (or Torx bit sets), hex bits and other impact driver bits. For more on driving screws with more torque, see our torque screwdrivers.