Originally Posted by Shimagnolo

KMC makes "reusable" links (like the SRAM 8s & 9s "PowerLink"), and they also make "non-reusable" links (like the SRAM 10s+ "PowerLock"). The "non-reusable" version just has a tiny shelf added to the side of the slot to make it latch.

In buying KMC 10s chains, it is random which one comes in the box, and there is nothing printed on the box to give a clue.
Just buy the Park MLP-1 tool, and any of them can be removed in a second.
And BTW they can all be reused.