Review on 🛹 16 PCS Red Mini Skater Generic Abec 9 Precision 608 Rs Skate Ball Bearing Deck Longboard Bearings by Robert Blair

I bought these for 3D printing "nuts" for the office.1. they come drenched in fat. I don't think I've seen bearings that swim in their own grease right out of the box. This might be something you are looking for, it caused a big mess for me.2. The biggest problem I've had is that they don't have the NEXT accuracy. The outer diameter is 22.0 mm +/- almost 0.2 mm! And that's just the average of the first 8 measurements! Some bearings fit my 3D printed parts snugly and snugly (as expected), others literally fall right into the trough. and we're talking about the same instance of the same printed part. If you need it for your skateboard, you probably won't notice a 0.2mm difference, but if you use it with precision gear, stay away! , I can't say if they are very good because I use them. Just thought I'd share my $0.02 frustration. Update: They spin like crap. it sounds like the bearings are rubbing against a plastic screen. return these :(