【Superior Tool】Six-color drill bit holder set with key ring, meet your daily needs 【Comfortable Operation】6-piece screwdriver bit holder set, smooth surface, removable grip, easy to hold with one hand 【Excellent Materials】Made of high-quality aluminum alloy, excellent workmanship, durable, rust-proof and wear-resistant 【Practical Design】The extension bar equipped with a black metal key ring, can be hung on the waist or a backpack, easy to carry 【Wide Range of Uses】The drill bit extension holder can quickly store and carry 1/4 inch hex shank drill bits and screwdriver bits 【Operation Mode】This bit holder key ring is equipped with a ball lock to hold the bits in place, working as a sliding or quick-locking system. This makes it easy to change the bit with just one hand. 【Durability】The drill bit adapters are made of aluminum alloy, which is durable, lightweight, and sturdy, ensuring longevity.