Time-Sert Master Inch Coarse UNC thread repair kit p/n 0010 UNC Master Thread repair system by Time-Sert p/n 0010 This set includes 5 complete thread repair tool kits! Total of 100 inserts in multiple lengths Sizes include 1/4-20, 5/16-18, 3/8-16, 7/16-14, 1/2-13 thread repair kit Reliable fast permanent repair thread repair kit