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Ships within 48 hours · Estimated delivery Aug 31 - Sep 5
it has Ceramic Balls (Si3N4 Silicon Nitride)
7210BBNLS Nachi Angular Ball Bearing
510052 Ball Bearing
Dimensions: 25mm x 62mm x 17mm/Metric
also R144ZZ bearings are pre-lubricated with grease
800-Pack Skateboard/in-line/Skate Bearings Black Shielded dynamic load 267N it has Ceramic Balls (Si3N4800 Inline Skate Roller Hockey Skateboard Black Color 2 Metal Shields 800 skateboard bearings has 800 Deep Groove Radial Ball Bearings,skateboard bearings are closed with Metal Shields,skateboard bearings are made from high strength Carbon Steel,each skateboard bearings has 2 Metal Shields to protect the rolling elements from dust or any possible contamination,also our skateboard bearings are pre lubricated with oil, our skateboard Bearings set is
