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 3/8 In.-16 Compatible External Thread Size Not Applicable Material Steel Overall Length 33/64 in Product Type Drive Tool Compatible Manufacturer Model Number 903816-13 903816-25 Features Install Slotted Inserts without Engaging the Internal Thread Series E-Z Hex