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 #8-32, M4, Compatible External Thread Size 5/16 In. -18, Material Steel, Overall Length 19/64 in, Product Type Drive Tool, Compatible with Grainger Part Number 4ZB94, Compatible with Manufacturer Model Number 329-008, Features Install Slotted Inserts without Engaging the Internal Thread, Series E-Z LOK. This item has been restricted from sale in the following state (s): []