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WHEELS ARE MEASURED in mm (height size) and A (durometer/hardness). A higher "mm" number means faster wheels. A higher durometer "A" number means harder wheels. Harder wheels last longer
80mm/85A PREMIUM FORMULA, URBAN PROFILE has incredible resilience, roll and rebound. The Urban profile improves maneuverability and control due to the wider surface contact with the pavement
CONSISTENT SPEED, CORNERING AND PERFORMANCE are achieved through the solid core design. The reinforced core properly bonds and supports the urethane to enhance the skate experience
MAXIMUM GRIP, WEAR AND VIBRATION REDUCTON come from the proprietary urethane formula
MADE IN THE USA, 8 WHEELS PER SET (bearings and spacers not included)
Rollerblade's Hydrogen Wheels are the pinnacle of performance. When you want performance, the 85mm wheels are the ones you want spinning underneath your feet. They deliver power and response with more grip to keep your steady and longevity for greater use. The urethane is a great vibration reducer which means less fatigue and more performance for longer stretches. The core of the Rollerblade Hydrogen Wheels are designed in a way to give you more flex, power and energy with each stride. These top notch wheels are a must-have for the serious skater looking for that performance. Specifications: Product ID: 505008 GTIN: 0888341528489 Model Number: 06635900 305 Skate Type: Fitness What Bearings are Included?: None Wheel Durometer: 85A Number of Wheels: 8 Bearings Included: No Best Use: Recreational