A Hillman assortment of threaded inserts designed to add a threaded hole. They may be used to repair threaded holes, provide durable threaded holes in soft materials, place a thread on a material too thin to accept one, mold or cast threads into a work piece thereby eliminating the need for machine operation, or to simplify changeover from unified to metric threads or vice versa. Included parts come in 10-24 thru 1/2"-13 coarse UNC screw thread sizes. Full assortments of #59132 contain six (6) refills comprised of Hillman Item #'s 59133-59138.