Features Stainless Steel + Aluminum Alloy: The socket rod is made of high quality stainless steel and aluminum alloy has high hardness, wear resistance, durability and long service life. Adjustable Collar: Fast change of hex handle and adjustable collar, one handed operation, suitable for most electric drives, handheld drives and drill bits. Cupping Design: Hex handle keychain adopts cupping design, which is easy to grasp and easy to replace with another bit. Removable Bushing: The socket rod has a smooth surface and a removable bushing to prevent the hex handle key chain extension rod from falling off. Application: The socket rod is small and easy to carry around, suitable for drill bits, screwdrivers, bits, etc. Specification: Item Type: Hex Shank Keychain Material: Stainless Steel + Aluminum Alloy Purpose: Socket Connecting Rod Socket Post Colour: Black, Green, Red, Yellow, Blue Keychain Socket Size: 1/4in Suitable Keychain Socket Handle Type: Hex Handle Package List: 5 x Socket Holder 1 x Carabiner Package List 5 x Socket Holder 1 x Carabiner