●SIZE: 100mm diameter * 24mm width; 89A PU. ●There are 2 stunt scooter wheels with bearings, Solid 100mm CNCd Alloy Core Wheels Wrapped in 89A PU made of high rebounding. ●Solid ABEC-7 bearings are fixed inside both wheels for picking up faster speeds for a smooth and long lasting. ●The pro scooter wheels are the best for the beginner rider do tricks. 100mm polyurethane wheel material and alloy cores that together offer better grip on flattop terrain. ●The delicate design package is integral to this characteristic.The best gift for beginner riders. FREEDARE offers a 6-month warranty on all complete wheels because stands behind the quality and craftsmanship.