16 inline/Rollerblade Skate Ceramic Bearing:Sealed:Si3N4
Set of 16 608RS Ball Bearings
Work with Inline Roller Skate
Steel cage with Si3N4 Ceramic Balls
8mm x 22mm x 7mm
Set of 16 Inline Roller Skate Ball bearings, the set has 16 Ball Bearings with Ceramic Balls, Bearings are Rubber sealed, the cage has silicon nitride Ceramic balls, the 9 balls are made of Ceramic Si3N4 (Silicon Nitride), each bearing has 2 Rubber seals to protect the bearing from dust or any possible contamination, these are self lubricated bearings.