Save expensive components from the scrap bin with this Industrial Grade Workshop Kit. The Powercoil 3532-WK1 delivers everything you need to permanently repair stripped and damaged UNC threads in engine blocks, machinery, and equipment. This 95-piece set includes precision HSS taps, installation tools, and stainless steel helical inserts for sizes 1/4" through 1/2". Create threads stronger than the original parent material and keep your workshop running at peak efficiency.