4pcs SBR20UU Aluminum Block 20mm Linear Motion Ball Bearing Slide Block Match for SBR20 20mm Linear Guide Rail

So far with the multiple purchases of these bearings they are holding up to what need them to do on my miter saw slide rail work bench. Smooth rolling action all across. No laps or waddling during movement. I'm satisfied.

Good quality and good buy, fast shipping

Works great with the rails I have. Glides smoothly and with little effort.

slide blocks are well made and a perfect fit , and work as described, would buy again.

The package was trashed/ tarred and open. Items rapped like a 5yr did it Items showed signs of use but were usable.

Bloques en aluminio resistente funcionaron a la perfeccion en rieles vevor

Excellent value and work perfectly.

I purchased this to replace a Vevor SBR20 slide block and they are not the same. They are slightly smaller and sloppy on the rail.