1Quick Release Bit Holder: This hex socket adapter with bit extension rod boasts a secure locking mechanism and quick release feature, enhancing your efficiency with simple installation and removal. 2Sturdy Materials: The main body is made of carbon steel, and the shell is made of aluminum alloy, this bit holder ensures longevity and wear resistance. Glossy finish ensures comfortable grip and lasting performance. 3Versatile Compatibility: Perfectly compatible with 1/4 inch hex shank drill bits and screwdriver bits, making this bit adapter an essential for woodworking, maintenance tasks, home improvement projects, and beyond. 4High Efficiency: Designed for seamless transitions between tasks, the double ended bit holder simplifies tool change, allowing you to switch between driving sizes effortlessly, maintaining a high efficiency work. 5Optimized User Experience: Engineered with user convenience in mind, the accurate fit and smooth operating ensure a convenient experience, reducing downtime and maximizing your efficiency on the job site. 2 x Double HeadBit Holder