Non Re-useable MissingLinks have a latch design, which can only be used once.
Re-usable MissingLinks have no latch design, which could be used 3 to 5 times.
Insert both halves of the MissingLink into the chain
Press both halves of the MissingLink connector together.
Lock in place by pulling the chain apart.
It is suggested to use MissingLink to connect multiple speed chains(12-6 speed), MissingLink is safe and convenient. Please choose the corresponding MissingLink with the chain.