8-Ball Concave Bearing - Single or bulk discounts
If you are anything like me, you don't want to be messing around cleaning and fiddling with bearings when you could be playing yoyo!
These are good quality, budget friendly concave bearings. They spin well and are reasonably reliable. Best part, you can buy a pack of 10 and just swap them out when they eventually need maintenance (as all bearings do).