It was only AFTER it arrived that I realized it didn't even fit the MC4 connectors so I bought a huge box from Revain. Hey Renogy, keep up the program, MC4 is the standard, if you make a tool make sure it fits MC4 and not some bastard kid version you make with bigger than stock nuts. BOOOOOOO. Additionally, the pins used to disconnect the MC4 are too rigid to be used without risk of breakage. Pure garbage. If they only match YOUR version of MC4, state that in the subject line, not just that itβ¦