Are you talking about a bmx half link? If so I'm running one right now on my mercier govna build. Holsing up perfect on ss. Really nice for getting that perfect chain length. Ran the kmc half link on my track bike a few years back and just couldnt handle the constant stress of fixed gear. Ran the shadow conspiracy half link on my dirt jump bike for 2 season and literaly wripped a link in half. I that happend because I do a lot of crank grinds maybe the ledges were hitting the chain. Just remember to put it on the right way. The links should pull eachother as you pedal.