These are a cheap poor quality bearing, that will function okay in non high speed or high stress areas, the last place I would consider using these bearings are in my children's rollerblades or scooter wheels.

good quality and reliable for the price.

Decent quality product works for what I need it to which is only light duty

I haven't used them yet but they seem to be a nice quality.

Nice Quality for very little expense.

Very poor quality, almost like dirt is in the bearing

Very poor quality, almost like dirt is in the bearing

There's no roughness in turning and feel "tight" and smooth as they should.