1/4 inch bit holder keychain prevents unintentional dropping of the hex handle It is less complicated to select up the product and replace the drill bit you wish with one hand, which helps to guarantee the safety of high-altitude operations The drill bit socket adapters are made from aluminum alloy, nice durability, lightweight, sturdy, would be carried with you Hex shank keychains are suitable extension of maximum screwdriver bits The universal 1/4-inch instant hex shank and 1/4-inch hex socket are compatible with kind of electrical screwdrivers, handheld screwdrivers and drill bits Package Contents: 6 PCS hex screwdriver bits holder extension bar & 1 PCS mountaineering buckle The drill bit can be removed via pulling back the exterior metallic ring throughout disassembly