Alfa Tools UNC 1/4-1/2 INSERT RANGE KIT

Helical Thread Insert National Coarse Thread Range Kit, Contains: 10 Inserts each 1/4"-20 (TI66220), 5 Inserts each: 5/16"-18 (TI66222), 3/8"-16 (TI66224), 7/16"-14 (TI66226), 1/2"-13 (TI66228), 1 Kit per Pack