Description [Easy To Carry]Aluminum alloy screwdriver bits holder are small and portable, easy to carry. Suitable for handling drill bits, screwdrivers, and bits. [Rust ]The chrome-plated of the screwdriver drill bit holder increases rust resistance. It can be used for drives, making this extension bracket very convenient and flexible [Durability]The hard alloy bracket can achieve maximum durability of extension bar drill screw adapter, and -duty structure can extend the service life [Aluminum Alloy]The drill extension frame is made of aluminum alloy and has a heavy-duty structure to maximum efficiency [Wide Application]Expansion of screwdriver bits, screwdriver bit conversion using universal 1/4-inch hex socket is suitable for most electric screwdrivers, hand-held screwdrivers and screwdrivers Male screwdriver bits holder size(L x W): About 38 x 15mm/1.5 X 0.59inch Male screwdriver bits holder with ring length: About 60mm/2.36inch Male screwdriver bits holder ring dia: About 25mm/0.98inch Shank: 1/4 Inch hex shank Colour: multicolor Material: aluminum alloy Package Contents: 36 x Screwdriver Bits Holder 6 x Male Screwdriver Bits Holder 3 x Black Keychain 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.