Elevate your skating with the Rollerblade Hydrogen SE 90mm Inline Skate Wheels 8-Pack. Made from resilient urethane, these wheels boost both speed and traction. The twin 6 flow core interface provides firmness, while the ILQ-9 bearings ensure seamless and rapid spins. For your convenience, this set comes preassembled and includes 8 wheels, 16 bearings, and 8 spacers. Experience exceptional performance on every ride!