Just ordered a pair for my Rogue Vertical weight tree to mount off to the side by the 5/8 holes to hold my small change plates that sre buried by larger plates
These are quite heavy but are a nice option for safety's to do things like pin presses, rack pulls, etc versus the fabric safety's that most rogue racks use
Don't use bumpers a ton but my old gym had these and they were super nice. They were used and abused daily by Oly lifting and strongman stuff and they held up just fine