I bought this kit years ago for $125 and never used any of it. The description is:
Helical Thread Repair Kit, 40 Inserts per Kit, Standard, Thread Type UNF, 18-8 Stainless Steel, Includes 10 Each 1/4, 5/16, 3/8 Inserts, 5 Each 7/16, 1/2 In Inserts, Tap and Installation Tool
I'm looking to get $ 50 +shipping for it
Man that's a handy kit ..... Someone can use that for sure