brand new and high quality 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 for 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 for 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: 1 Pc/1 Set 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: 1 x Screwdriver Bits Holder