Twolions Hybrid 608RS Black Ceramic Bearings 8-Pack for Skates and Scooters

1. Hybrid Ceramic bearingsdo not need Greaseit have special rustling soundSuper High SpeedLong Spin time.2.Rolling elements:7 Black Ceramic Beads(Si3N4) High Temperature and Corrosion ResistanceAbrasion resistanceHigh Revs.3.Size: 8 * 22 * 7 (Inner * Outer * Height) / Unit: mm4.The Bearings have High Speed and High temperature resistance，But It Do not Suit For Extreme Sport Like High iIntensity Jump.5. Please Note:Freesport Speed Demons is a Series of Bearings which is under Twolions Brand. So the Bearings Rings will print "Freesport Speed Demons" on the bearings.So when you received the bearings with Freesport Print it is a correct bearings .Not Wrong Bearings.