Chrome Vanadium Steel Extension Bit Holder Built to Last: Crafted from Chrome Vanadium steel (CRV), with heat treatment for hardness, resistance to wear, and longterm durability. Designed to withstand heavy use without bending or breaking. Secure Bit Retention: Integrated strong permanent magnet in the shaft holds bits firmly in place, preventing wobble or slippage during use. Ideal for working with screws in tight or hardtoreach spaces. Fast and Convenient Operation: Quickchange and release mechanism lets you install, lock, and unlock bits in seconds. The 1/4 inch hex shank fits most standard drill chucks and tools for seamless compatibility. Adjustable collar allows onehand operation for efficiency. Size for Control: 60 mm extension holder length provides precise control and steady accuracy when drilling or driving, making it easier to achieve clean and professional results. Applications: 1. for driving screws in deep or recessed areas where a regular drill bit cannot reach. 2. Suitable for assembling furniture, cabinetry, or appliances where space is limited. 3. Efficient for maintenance or tasks where tool changes must be quick and reliable. This extension bit holder combines durability, secure grip, and ease of use, making it a dependable addition to any toolkit.