Hmm, the 10 speed links come with either a "M/L-10R" (for Shimano and SRAM) or a "M/L-10CR" (for Campy) designation, and it's been my understanding that the "R" meant re-usable, as in the same link may continue to be used for the life of whichever chain it's used on, without regard for the number of times it's disassembled/reassembled. I do chain cleaning/lubing off the bike. And that assumption seems to have been born out in my experience with 10 speed drive trains. I made the same assumption about the "M/L-11" links, but now that I see they do not have the "R" in their part number, I'm thinking maybe that's where I went astray.