Application7402 universal outside thread chaser will work on threads with diameters from 1-1/4” to 5” O.D.1.BENEFITS: This thread chaser will quickly restore threads to near original condition without the use of expensive thread-cutting equipment. Eliminate the need for expensive thread cutting equipment.2. EASY TO USE: Just tighten the tool slightly on the good threads, and then back off over the damaged thread area to restore the threads.3. NICE PERFORMANCE: The die cast alloy V-pad will not damage the threads and V-pads and dies are replaceable.Specification:Direct replace For No.216884Threads per inch: 4,5,6,7,7-1/2,8,9,10,11,11-1/2,12,14,16,18,20 and 24Material: Carbon Steel Package included1 pc 7402 Universal Outside Thread Chaser includes standard die set (216884).