One plate of specified weight.
Hub Will Not Loosen
With enough constant daily use and being dropped, the steel hub of other "economy" style bumpers can detach from the rubber, making it spin and eventually pop out. That won't happen with these. They have a wire system that goes from the hub into the rubber, preventing it from spinning.
51mm Bored Hole
The precision-bored hole is just 1mm larger than the typical 50mm bar sleeve, for a snug fit.
The regulation spec for all bumper plates.
Stiff enough to use the thin 10lb plates by themselves! They will not buckle or bend under normal use.
|Fit||Snug (about 51mm / 2")|