Highly Robust Bits - The Impact Control Screwdriver Bits and Nutsetters are highly robust and ideal for heavy duty applications, even withstanding the high power of impact drivers. The screwdriver bit features an extended torsion zone that makes it extremely sturdy for long-lasting work. S2 Modified Steel and an optimised heat-treatment process provide extra-tough endurance for high performance, including in plant installations or heavy industrial work. All bits have a 1/4-inch external hex shank and are suitable for use with drill drivers, screwdrivers, and especially with impact drivers. The bits are part of the Bosch Pick and Click system, which enables individually buildable accessory sets for fully customisable bit collections. Click-fitting slots perfectly secure individually purchased packs for a personalised collection and the easy replacement of old packs. The bits come in a plastic holder that click-fits into the Pick and Click Empty Cases M and L for personalised bit set var