Universal screwdriver 1/4 hex shank easily clips into the power screwdriver. Instantly converts impact driver to hold drill bits and screwdriver bits, use in automotive, garages, warehouses, offices, home, etc. Grips extra fine bits from 0.6mm to 8mm, can hold many rotary tool accessories. Three-jaw chuck to securely hold round shank drill bits; aluminum alloy body and removable connecting rod. Convenient, safe and fast. Keyless chuck converter to go from driving to drilling in seconds. Allows the impact driver to function like a regular drill and hold quick-change drill bits and bits. Note: The data are all manual measurements, please allow an error of 1 - 29cm, due to the difference in light and display, there will be a certain color difference, whichever is the actual object received.