Add the precision and convenience of Bosch Keyless Chuck to your toolkit. With no need for extra tools, just change from one size to another. This must-have accessory affords a firm grip; during applications of high torque, it reduces slippage. The keyless chuck, designed for efficiency, means you can change bits in seconds-time saved. Designed with durability in mind, its performance is very long-lasting. It can stand up to rigorous use. Upgrade the capabilities of your power tools. Bosch Keyless Chuck, a necessary accessory for precise drilling that is especially suited to both workshop and job site, easily adjusts itself wherever you need it.