Chiloskit 20pcs V Groove Ball Bearings Pulley, Small Bearing Deep V Groove Guide Pulley Rail Ball Bearings Wheel,4x13x6mm

These were exactly what I expected. I ended up not being able to use them for the application I had planned on due to their size being a little smaller than I needed, but I had no problem finding another use.

Plan to use it on my table jigsaw diy. Just havent had the chance to add it.

For the price, I am impressed by the quality of the bearings and consistency of the manufacture.

I purchased these bearings to use on a travel ukulele I built to carry in my suitcase on trips. The bearing were used as rollers to support the strings. They worked just as planned and allowed me to build a unique instrument.

Made of very soft steel. Most were packaged in small tubes & arrived un damaged. However a few were put in loose (4 ea). Those 4 beat the hell out of one another in shipment & arrived all very badly dinged up to the point they are not useable. As I said.. these are made of very soft steel. My intended use is to construct a coiled brake line tube straightener. For this project.. I hope they last long enough to get the job done on my pickup truck. They are also much smaller than I though they would be.. my fault I guess for not using my calipers to demonstrate the size before ordering. If you have a need for very cheap small bearings for a short term project that does not require hard steel bearings.. these may work for you.

If you know what you're doing, these are great pulleys! Yes, the bearing cover does come off easily but it's a non issue if you design your axle to account for it. Used these to build a physics force table for my children. 3d printed support brackets and axle and voila! $30 dollar force table compared to $100 plus if you buy a premade table! Great pulleys! With so many, you can use it for all kinds of pulley applications.

Excellent pulleys. I've not installed them yet. If they don't work after my installation, I'll update. But looking at them, I'm confident they will work fine. They are exactly as described and shown in the picture

Center hub is a loose fit, about 0.5mm of radial play, about 5 to 10 degrees of angular slop. Metal seal falls out on all of them. I would not recommend these on any project that requires any precision or accuracy. The metal seems tough and it comes in a bag smothered in oil...