Malco Tools.New Connext Handles have been combined with precision-fit and hardened Malco Chuck Drivers to create a versatile, durable hand-held hex driver and nut driver. All components, including magnetic hex chuck driver shafts and new hollow hex chuck drivers and Connext handles are also available separately. Replacing a worn hand driver with just a driver shaft at a time is more economical, the maker says, and changing a hand driver size can be as easy as retrieving a different size color-coded chuck driver from the tool box. 800.328.3530.www.malcotools.com.