As an avid roller skater I'm always looking for ways to improve my performance on the rink. The A14032000Ux0028 bearing did just that- the smoothness and speed of my skates increased significantly after installing them .As my tests showed, these bearings are durable and long-lasting, which is important for any skater. The only downside is the slightly higher price compared to other bearings in the category. overall, a great addition to any skater's equipment collection..