Stainless Steel 5mm Deep U Groove Ball Bearings Pack of 2, Pulley Bearing Wheel Rail Ball Bearings Wheel

Excellent product ! They are very smooth with very little slack in any direction

These salvaged our zip line, which has been neglected by the kids because it no longer zipped. The new bearings where a perfect fit, and the zip line works perfectly now.

Nice product. Machined and surface finished nicely. Rolls smoothly around the axis. No crunchies as they say. I actually bought more for my project they were so nice. Hopefully this is a good supply going forwards.

Its working

Very heavy duty which is good using it to make some barn door window coverings

Much better than the plastic rollers that came with zip line originally. Built to last!

Great

As described, arrived early then estimated. Will buy again if needed

Not 7mm as described. When another reviewer said it fits a 1/4 inch bolt well, that is because it IS a 1/4 hole.

The bearings seem to be of good quality and should work well for our intended purposes.