The Pick and Click Impact Control Screwdriver Bit Set, 31-Pieces is a customisable set containing highly robust bits that are ideal for heavy duty applications, even withstanding the high power of impact drivers. The bit features an extended torsion zone that makes it extremely sturdy for long-lasting work. Storage box clicks securely into allocated slots within the Bosch Pick and Click Empty Cases M and L, enabling the transport and removal of boxes and accessories with plastic holders. Click-fitting slots perfectly secure individually purchased packs for a personalised collection and the easy replacement of old packs. It has a 1/4-inch external hex shank for use with drill drivers, screwdrivers, and especially with impact drivers.