Thoughtful & Safe : The cupped design of hex shank keychain extension bars are designed for your easy holding and convenient replacing another drill bit, which can offer you a pleasant using experience. Their smooth finish and removable bushings can well avoid hex shank keychain extension bars from unexpectedly falling, ensuring the safety of high-altitude operation. & Extensive Usage: These drill bit socket adapters are made of Metal, feature nice durability, , sturdy, which ensures their . Hex shank keychains are suitable extension of most screwdriver bits; The universal 1/4-inch fast hex shank and 1/4-inch hex socket are compatible with a variety of electric screwdrivers, hand-held screwdrivers and drill bits. you receive 1/4 inch hex shank keychain extension bars in some different colors, sufficient quantity to meet your daily use bit holder 1/4 inch hex shank screwdriver bits for us to develop quality and useful tools. Saved some room from inside the bag using theses bit holders. No longer worry about not finding tools, Easier to take and change the bit with one hand, Compatible with varieties of electric screwdrivers, hand-held screwdrivers and drill bits. type:C Colour:black Material:Metal Package Contents: 6 x 1/4 hex shank handle keychain extension rod 1 x metal hanging buckle 1 x Male post Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.