Ball Bearing Patio Door Wheel

Thanks for posting. We do not have the exact replacement match for this roller but we do have an alternative that should work. Take a look at the 81-279 Patio Roller Assembly.

The adjustment screw is positioned slightly higher, but the wheels roll a lot more smoothly than the treads on the existing assembly. 

Carefully look over the specifications to see if you think this might work for your repairs.