TwoLions High Rev 608RS Hybrid Black Ceramic Bearings for Inline Skate or Skateboard or Scooter (Pack of 8)

1. Hybrid Ceramic bearings,do not need Grease,it have special rustling sound,Super High Speed,Long Spin time. 2.Rolling elements:7 Black Ceramic Beads(Si3N4), High Temperature and Corrosion Resistance,Abrasion resistance,High Revs. 3.Size: 8 * 22 * 7 (Inner * Outer * Height) / Unit: mm 4.The Bearings have High Speed and High temperature resistanceBut It Do not Suit For Extreme Sport , Like High iIntensity Jump. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions., Weight: 0.29101018584 pounds, Manufacturer: Twolions