Built in auto locking clip mechanism securely holds drill bits during moment operations while allowing one press removal. Uses carbon steel cores durability and lightweight aluminum construction for prolonged use Double head fast change design with 6.35 mm general interfaces. This hexagon drill adapter enables fast tool switching for enhanced productivity in demanding tasks, crafted from rustproof carbon steel and waterproof aluminum housing Engineered for seamless integration with 6.35 mm chucks tools. This fast change adapter combines industrial grade strength and ergonomic functionality to streamline workflow in wet and dusty environments without slippage or erosion risks Ideal for professional contractors, enthusiasts, and workshop technicians requiring stable compatibility with electric drills, drivers, and screws for daily repairs or complex assembly projects Usage scenarios Construction sites and renovation projects in wet or dusty environments where secure bit retention and rapid bit changes improve efficiency and reduce downtime Automotive or mechanical workshops performing repetitive drilling and screw driving tasks that demand reliable compatibility with 6.35 mm chucks and quick tool swaps Woodworking or metalworking shops carrying out daily repairs or complex assembly tasks that benefit from secure bit retention, fast change capability, and durable construction