608 Full Ceramic Skate Bearing ZrO2/Si3N4 8x22x7 Ball Bearings
Amazon.com : TwoLions High Speed 608RS Stainless Steel Hybrid Black Ceramic Bearings for Inline Skates or Skateboard or Scooter or Quad Roller Skates (Pack of 8) : Sports & Outdoors
Sonic Ceramic Bearings – Shop Task Inline Skate Shop