A great choice for general tasks - robust and compatible bits made from S2-modified steel with an optimized heat treatment process. Color-coded bits allow for quick overview and identification of the correct bit type. The 45-piece set with extra hard screwdriver bits and holders comes in a practical and sturdy case that provides good organization as well as secure storage and transport. With a secure lock and reinforced corners, the Pick and Click case protects the accessories even under tough working conditions. The case is part of the Bosch Pick and Click system, which allows for individually customizable accessory sets for absolutely flexible bit assortments. Snap-in inserts secure individually purchased bit packs from various assortments for personalized collections and enable easy replacement of old bit packs. All bits have a ¼-inch external hex shank and are compatible with screwdrivers and drills. Hex shank for maximum power transfer in standard drill chucks and hex holders.