Special characteristicsVERY ROBUST The universal Impact Control holder, standard magnetic, is a good choice for universal screwing jobs. Permanent magnet holds bits securely. Excellent for all repair jobs with power tools. Part of the Bosch Pick and Click system, which allows individually configurable bit pack sets for fully customizable collections. The holder is part of the Bosch Pick and Click system, which allows individually configurable accessory sets for fully customizable bit sets. The click-lock slots allow a personalized collection of individually purchased packs to be inserted and old packs to be easily replaced. It has a 1/4 inch hex shank for use with common cordless drills and impact drivers with a 1/4 inch tool holder. Technical dataShank: 1/4 Inch Total length: 60 mm Drive shank external hex: 1/4 Inch