Time-Sert® Big-Sert 1/4-28 UNF Oversized Thread Repair Kit – Heavy Duty

AB, BT, DD, DG, EH, FK, G, GY, HS, IM, IV, KA, KW, KY, ML, PA, PH, TD, ZE, all Islands. With easy-to-follow instructions and all necessary tools included, Big-Sert kits make even the toughest thread repairs straightforward and effective.