Carbon steel construction Hardened carbon steel provides long lasting durability and reliable performance in daily use. This drill bit coupling is built to withstand demanding tasks and keep you working efficiently. Safe and stable Equipped with a built in stability lock and a high efficiency spring, the coupling clamps firmly onto drill bits to create a secure and stable connection. This eliminates wobble during drilling and helps deliver precise and accurate results. Convenient and practical A large spherical grip with an anti slip design makes the coupling comfortable and easy to operate by hand. The quick release mechanism lets you press down to release the bit, enabling fast and effortless bit changes. Applications - Everyday drilling tasks in metal, wood, and plastics where a secure bit connection and quick bit changes improve workflow - Projects requiring frequent bit changes, such as cabinetry, furniture making, or metal fabrication - Construction or maintenance work where stable bit grip and efficient operation support precise drilling Specifications - Material: carbon steel - Function: drill bit coupling with built in stability lock - Performance features: high efficiency spring, secure clamping, anti slip grip, quick release mechanism - Handling: large spherical grip for comfortable manual operation