Sure-Grip Qube Juice roller skate bearings were designed with 3D technology and a superior grease to keep them rolling with the speed you want.
It's always a good idea to keep an extra pair of bearings on hand in case you need to replace your bearings at some point in the future. These are also a great gift idea for your roller skate-obsessed friend or loved one :)
Sold in 7 or 8 mm. 8mm is the most common for newer roller skates. If you have a pair of vintage roller skates they might have 7mm axels.