Aluminum Alloy Imported [Function] --- Bits hold/quick change, The Pull-out bushing bits holder can instead of carting around large boxes that bits commonly come in. To make it easy to remove and place back on the quick connect. Can avoid accidental dropping of tools and facilitate high-altitude operations. [Application] --- Universal 1/4 inch quick hex shank and 1/4 inch hex socket keep different commonly used 1/4 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. [Durable] The drill bit socket adapters are made of aluminum alloy, nice durability, lightweight, sturdy, which ensure their longevity. [Higher Efficiency] --- Thanks to the smooth surface 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. Upgrade Push to Unlock 18pcs 1/4 inch Hex Shank Aluminum Alloy Screwdriver Bits Holder Light-weight Quick-change Extension Bar Keychain Drill Screw Adapter Change Portable With Black Carabiner Feature: The keychain extension rod is made of aluminum alloy, and the interior is not completely empty. It can be fitted with a short bit or a long bit. This keychain has a flat, thick and round design, which makes it easier to take the product and change the bit with one hand. The smooth surface processing and pull-out bushing can avoid accidental dropping of tools and facilitate high-altitude operations. The powerful ball lock buckle can carry tools up to 500g in weight. Large-diameter flat-mouth rings are easy to install on chain buckles. Comes with a chain buckle, which can be hung on a belt. You can also use the keychain post with your favorite carabiner according to your needs. Extend all kinds of screwdriver bits, screwdriver head conversion uses Universal 1/4inch quick hex shank and 1/4inch hex socket fit most electric drivers, hand-held drivers and bits. Compact and portable, easy to carry around. Suitable for drill, screwdriver, batch head and other to transfer. Screwdriver Bits Holder only, other accessories demo in the picture is not included. Specifications: Material: Aluminum Alloy Size: app.60mm/2.36in Optional Colors: Blue, Red,Black,Green,Yeloow,Sliver Quantity: 3 Set（18pcs） Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Content: 18 x Screwdriver Bits Holder 3 x Black Carabiner