[Function] - - Bits hold or quick change, The Pull-out bushing bits holder can instead of carting around large boxes that bits commonly come in. To easy to remove and place back on the quick connect. Can avoid accidental dropping of tools and facilitate high-altitude operations. [Application] - - Universal 1 or 4 inch quick hex shank and 1 or 4 inch hex socket keep different commonly used 1 or 4 bits handy. Fit most electric drivers, hand-held drivers and bits, like t25 and t20 bits etc. Make sure this fits by entering your model number. [Large Load] - - The powerful ball lock buckle of bits holder can carry bits tools up to 500g in weight. To keep the drill bits not easy to fall. [Keychain Bit Holder] - - 6PCS Extension Bar comes with a keychain buckle, which can be easily to install on chain buckles. Compact and portable, easy to carry around. The drill bit socket adapters are made of aluminum alloy, nice durability, , sturdy, which their . [Higher Efficiency] - - Thanks to the smooth processing and pull-out bushing, can avoid accidental dropping of tools and facilitate high-altitude operations. It can be fitted with a short bit or a long bit. [Easy to Use] - - Keychain has a flat, thick and round design, which makes it easier to take the Extension Bar and change the bit with one hand. Colour:Photo Color Material:aluminum alloy Package Contents: 6X Bits hold 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.