Origin: Mainland ChinaType: Wheelis_customized: NoColor: Black, Silver, Gold, Orange, Red, Purple, Green, ColorfulSize: Diameter 100mm(3.9inch), width 24mm(0.94inch)Core: 6063T6 AluminumPU: High-rebound PolyurethaneBearing: ABEC-9Hardness: 88A UrethaneResilience: 85%Suitable for: Skateboard, Inline Skate, Scooter, Pro Scooters, Wheelchair, TrolleyType: Stunt Scooter WheelType1: kick scooter wheelType2: scooter wheel with bearingsType3: replacement scooter wheelType4: push scooter wheelTread material: Polyurethane (PU)Product Performance: Light Weight,High Strength,Bright AppearancePolyurethane Tread: Good Elasticity, Impact Resistance, Good