Quantity: One set High-quality material: The drill bit extension is made of high-quality aluminum alloy, which is durable, lightweight and sturdy. The interior is not completely hollow. It can be equipped with short or long drill bits. Package contents: The package includes 6 different colors (red, yellow, blue, green, silver and black), a hex handle keychain extension and a black carabiner, enough for your daily use. Belt loop: Includes a black carabiner for hanging on your belt. You can also use your favorite carabiner to attach key rings, keys and other small items if necessary. Safe to use: It can be carried anywhere, and the hex handle prevents accidental drops. The tip is easier to grip and position, contributing to safety when working at height. Wide range of applications: Compatible with most screwdriver bits. The universal 1/4" hex quick coupler and 1/4" hex socket are compatible with a variety of electric screwdrivers, manual screwdrivers and drills.