Set of 8 Skateboard Ceramic Bearing Silicon Nitride Balls
|Set of 8 Rubber Sealed Ball Bearings
8mm x 22mm x 7mm
With Si3N4 Silicon Nitride balls
Set of 8 skateboard bearings with the black Si3N4 silicon nitride ceramic balls, the set has 8 Ball Bearings with Ceramic Balls, Bearings are Rubber sealed, each bearing has 2 Rubber seals to protect the bearing from dust or any possible contamination, these are self lubricated bearings. Bearings have Si3N4 Silicon Nitride balls.