Product Description Length: 4 inches (100 mm) – ideal for reaching fasteners in tight or hardtoaccess spaces, making your work more efficient. Universal Fit: 1/4 inch quickchange hex shank design is compatible with all standard power drills, chucks, and screwdrivers, ensuring seamless integration with your existing tools. Magnetic Hold: Builtin magnets keep bits securely in place, reducing wobble and preventing slippage during use for precise and reliable fastening. Material: Constructed from hardened chrome vanadium (CRV) steel with a zinc plating for enhanced rust resistance, exceptional durability, and improved shock resistance under heavyduty conditions. Applications: 1. for assembling or repairing electronics and appliances where screws are located in recessed or narrow areas. 2. Ideal for automotive maintenance tasks such as accessing fasteners in engine compartments or dashboard assemblies. 3. Suitable for furniture installation or , especially when working around obstructions or confined corners. This extension bit is designed to deliver strength, precision, and convenience, making it a dependable choice for both professional tradespeople and DIY users who require a reliable solution for hardtoreach fastening jobs.