These are the cheapest urethane bumpers on the market. They're made at an OEM manufacturer over seas then rebranded & sold. Same quality as the other brands that sell these. I tend to buy pretty high end equipment and my standard are pretty high when it comes to this stuff. I got 6x 55lbs, 4x 45lbs, 2x 35lbs and they've all been perfect. When the 25lbs plates are back in stock I'll probably order 4 of those as well. They're thinner than normal black bumpers which is awesome for heavier loading on squats, DL, etc. My only knock is I wish they were American made. Well worth it.