Introducing the 'Universal 10mm Chuck Key', your ideal tool partner. Perfectly designed to fit the majority of 10mm keyed chucks, this universal chuck key truly lives up to its name. Its standout feature is its guaranteed compatibility with a maximum chuck size of 10mm. Elevate your tool arsenal with this replacement chuck key, boasting universal versatility and proud to deliver an exceptional performance that never disappoints. Preeminently functional yet easy to use, the Universal 10mm Chuck Key is an indispensable accessory for all your tool related needs.