80mm Hydrogen wheels by Rollerblade are the ultimate upgrade for those who want to experience the difference a high quality skate wheel can make. Made in the USA from a proprietary formula of the purest urethane these inline skate wheels provide the ultimate level of roll, rebound and resilience. The core is engineered to flex with a return snap on each stride to transfer more power while at the same time conserving energy and the urethane is balanced to bond perfectly with the it. These 80mm inline skate wheels are a natural upgrade to any skate designed with smaller wheel wells or for the skater who wants to accelerate faster or turn more readily. Truly the choice for those who want to see what a difference a quality wheel can make.