The Drive Tool for E-Z LOK & E-Z Knife Threaded Inserts (Internal Threads: 1/2-13, 1/2-20)E-Z LOK Drive Tools speed the installation of solid threaded inserts for metal, Knife Thread Inserts for hard wood and Hex Drive Thread Inserts for soft wood. A standard hex shaft allows for the use of power drills or drill presses in higher volume installations. Both styles quickly drive in the inserts without time consuming thread engagement.