MASTER THREAD REPAIR KIT 1/4 X 28 – 5/16 X 24 – 3/8 X 24 – 7/16 X 20 – 1/2 X 20
HELICOIL TYPE
THIS SET CONTAINS ALL YOU NEED TO REPAIR THREADS IN THE FOLLOWING SIZES
1/4 UNF
5/16 UNF
3/8 UNF
7/16 UNF
1/2 UNF
INCLUDED ARE
ONE HSS SECOND TAP FOR EACH SIZE
ONE PRECISION GROUND HSS DRILL FOR EACH SIZE
TWO INSERT TOOLS FOR EACH SIZE
PLUS A GOOD SUPPLY OF THREAD INSERTS FOR EACH SIZE