Found this on amazon while looking for an rcm jig. what is it supposed to do?
https://www.amazon.com/Payloads-Inj...ch+rcm+jig&dpPl=1&dpID=41xBJeFAiRL&ref=plSrch
https://www.amazon.com/Payloads-Inj...ch+rcm+jig&dpPl=1&dpID=41xBJeFAiRL&ref=plSrch