Bosch Professional Keyless Chuck Matt chrome-plated finish for durability and style 1.5-13mm capacity for versatile use 1/2"-20 thread for compatibility with a wide range of tools Upgrade your power tool with the Bosch Professional Keyless Chuck. With a sleek matt chrome-plated finish, this chuck not only looks great but is also built to last. Its 1.5-13mm capacity allows for a wide range of drill bit sizes, making it a versatile addition to your toolkit. Plus, the 1/2"-20 thread ensures compatibility with a variety of tools. Say goodbye to the hassle of changing out chucks and hello to the convenience of the Bosch Professional Keyless Chuck.