Power Driver, Compatible Tool Type Drill Press, Power Drill, Compatible Insert Type Hex Drive Threaded Inserts, Knife Threaded Inserts, Solid Threaded Inserts, Compatible Internal Thread Size 1/4 In. -20, 1/4 In. -28, M6, Compatible External Thread Size 7/16 In. -14, Material Steel, Overall Length 7/16 in, Product Type Drive Tool, Compatible with Grainger Part Number 4ZE16, Compatible with Manufacturer Model Number 329-4, Features Install Slotted Inserts without Engaging the Internal Thread. This item has been restricted from sale in the following state (s): []