1/4" Hex Shank Screwdriver Bit Holder Extension Bar Quick Release Electric Drill Tool Parts Conversion Keychain Outdoor Tool 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. With a chain buckle, which can be hung on a belt. The cupped design of hex shank keychain extension bars are designed for your easy holding and convenient replacing another drill bit. The smooth surface processing and pull-out bushing can avoid accidental dropping of tools and facilitate high-altitude operations. Fit most electric drivers, hand-held drivers and bits. Material: Aluminum Alloy Size: app.60mm/2.36in Colors: Blue, Red,Black,Green,Yeloow,Sliver Package Content: 1pc *Screwdriver Bits Holder OR 5Pcs Note: Please allow 0-5mm 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!