The ball sinks back so far with weight that the plastic surround nearly touches the opposite surface. Immediately popped them off and started a return. Really cheaply made. Be prepared to get frustrated trying to peel off the backing.

Great value and sturdy. Great buy cheaper than ikea or homedepot.

There is no way these can support the stated max load without flattening. Out of the 24 one was doa but 23 are ok. Quality is questionable.