Sackorange 10 Pack R8-2RS Double Rubber Sealed Roller Ball Bearing 1/2 Inch Bore 1/2 x 1-1/8 x 5/16 Inch ABEC3 Precision Bearing for Electric Motor, Wheels, Home Appliances, Garden Machinery

It makes a really big difference when you have a 1/2 rod and these are slightly undersized. I assume these are millimeters. Because I had to shape down my rod maybe a 1/32 or more to get it to wedge on. And I have no lathe, so the rod isnt even. And now the gear I have on the other side is lopsided because of it. On the plus side the bearings arent very expensive and they do work. But really, be accurate. I wouldnt get these again because of that.

Got for a SSR 50cc dirt bike and they were slightly too big for the bolt and the wheel they were supposed to go into. I had to get pretty creative but I got them in and Im glad there was 10 of them because I damaged three or four of them trying to install where they didnt belong . Whats installed and rigged up worked great very happy with product and price

Great quality

as described

Sorry guys, I bought 30 of these for a heavy slide out drawer. Theyre nowhere close to 0.500 internal diameter. I opened one ten pack to find ID OF 0.0472 and an OD of 1.102! Coincidentally exactly 12mm x 28mm. No way in Christmas are they going on a 1/2 shaft. Infuriating.

Bearings were exactly on with measurements and quality, I used them to make 5 small wheel drums on my 2 x72 belt grinder. Tight and true project came out better than expected....................

Very well made. Shipping was a day earlier than expected.

I plan to use them in construction of a metal bender.

These bearings have a slightly heavier outer race and a cleaner look than the other comparable on here I would assume that should translate to a better bearing. They do turn slightly harder when new.

good bearings, really good value for price, need some breaking in before they run smooth at moderate rpms (battery operate hand-drill)...