This is a Tubus titanium rear bike rack that weighs in at only 500g. I ordered it last fall ($660 new) and it took a while to come in. In the meantime, I swapped out my second bike and picked up a different system that works with both my main bikes. I only wound up using this once on an 8-mile work commute. If you have standard mounts, this rack will work for you and it’s an awesome rack for bikepackage and/or touring. I’m also including the extra seat collar I picked up.