P/n 4212-125 Includes 6 Inserts

M12x1.25 spark plug repair kit p/n 4212-125 tooling.
The wrench which is the black tool 4-5/8" rotates all the tools, has a 1/2" inch hex
at the top which can allow you to extend the tooling with a socket further if need.
Includes: 2) inserts 9mm, 2) inserts 15mm, 2) inserts 17.5mm