Up your skateboarding game with these premium bearings These skateboard bearings are essential to keep your skateboard moving and reaching high speeds. They work by preventing damage to the wheel’s outer metal as it rolls around the hinge, providing a smooth ride with less noise and friction. These one-size-fits-all skateboard tools with an Abec-9 accuracy rating allow you to hone your skills and get rolling Top quality; pre-lubricated with silicone grease they are fantastic for high speed skating and peak performance Please note: Always use size 608 bearings for spinning toys. If you decide to clean the oil, please note that this reduces the RPM a bit but prevents rust and extends the life of the bearings Maintenance: You need to use the bearings several times to clean them reach their speed (RPM). To prolong the life of your bearings, keep them clean, dry and lubricate them regularly with granulated oil Material: High quality chrome steel Content: 608RS ABEC 9 skate bearings Abec 9