I bought a pair off Marketplace because I needed a pair of bumpers so my wife can warm-up her deadlift.
The casing was pretty loose, so I don’t think these are very durable.
They are magnetized, which is cool.
They don’t appear to be very durable and I don’t anticipate they will last long.
Spend the money for better collars.
I’m not a fan. They are too deep, which makes unracking them for bench presses pretty awkward.
I’m happy with X-3 otherwise, but I’m looking forward to replacing these.