High Quality Material Made of aluminum alloy, and feature nice durability, lightweight, sturdy. The interior is not completely empty. It can be fitted with a short bit or a long bit. Perfect DesignThe cupped design of hex shank keychain extension bars are designed for your easy holding and convenient replacing another drill bit. Smooth&Safe to UseThe smooth surface processing and pull-out bushing can avoid accidental dropping of tools and facilitate high-altitude operations.Comes with a chain buckle, which can be hung on a belt.Compact and portable, easy to carry around. Extensive UsageSuitable for most screwdriver bits.The universal 1/4-inch fast hex shank and 1/4-inch hex socket are compatible with a variety of electric screwdrivers, hand-held screwdrivers and drill bits. Warranty90-Day Free Return & 3-Year Warranty Drill bit extension holder are made with a high quality steel with heavy duty construction to ensure maximum efficiency. The chrome finish of drill bit holder give an added resistance to rust. It can be used for a variety of drivers making this extension holder very handy and flexible. Product Description Hex Shank Screwdriver Bits Holder Keychain Read more