This Screwdriver Bit Holder Keychain with Carabiner is a convenient tool to have on hand. It features a 1/4 inch Hex Shank Bit Holder that can hold up to 9pcs of screwdriver bits. The holder is made of alloy steel and has a magnetic feature that keeps the bits in place. The screwdriver holder keychain is black in color and has a hexagonal shape, making it easy to hold and use. It also comes with an extension bit holder screw and a screwdriver extension adapter. The keychain bit holder is perfect for those who need a screwdriver on the go and can be attached to a backpack or belt loop with its carabiner.