I got these,first set lasted;
a 400-500Km drive to a race track..
2 days abuse¨
1/" of the way back before they split and exited stage left... I mean left, gone, no trace of,
axle left floating on bolt with the metal sleave around it a 1/2" of fresh air.
But I will add that this could EASLY be instal issues as I didnt use any grease or oil when fitting and I think 1 was kinked upon install, but it was 20:00+ n I was leaving for the track at 07:00 next day n had work calling me for stuff to do that night
so far my 2nd set has lasted the rest of the summer, 1500 miles I guess, no issues so far, just needed the bolt doing up a few turns to get tight again