Wheels are super smooth and fast speed, like you are racing with the wind. High rebound PVC wheels (61 mm, 80A) with ABEC-7 precision bearings and 85A High rebound PU bushing. Our wheel can give you quick response from the ground, suitable for commuting, skate parks, ramps, pools and other smooth surfaces or even rough ground; barely no noise when it spinning.It's Ideal for 75 kgs weight.