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 1/2 In.-13 1/2 In.-20 Compatible External Thread Size 3/4 In.-10 Material Steel Overall Length 1 in Product Type Drive Tool Compatible with Grainger Part Number 4ZE24 Compatible with Manufacturer Model Number 329-8 Features Install Slotted Inserts without Engaging the Internal Thread