pu wheels for skate board 80*44 PU Wheels custom logo pu pulley for skateboard Product: PU wheels/pulley for skate board, 80*44mm, 78A, black, Customized Why there are thousands of types of wheels? The wheels have specific features of hardness, size, shape...and color, printing... When choosing materials, it should be considered to be suitable for different ground roads, such as floor roads, cement roads, asphalt roads and so on. No matter what road you slide on, the wheel must be flexible, wear-resistant, and moderate in hardness. It must also ensure that the wheel has enough friction coefficient on the road surface. The first is hardness, and the skateboard wheel is usually a polished polyurethane. The proportion of polyurethane in the wheel is different, and the hardness of the wheel is also different. A wheel with a hardness of 85A(A refers to hardness) is relatively soft and suitable for rough pavement taxiing. The sound is minimal when taxiing. It is a good choice for friends who like to go shopping. However, the 85A wheel is relatively non-wearable because it is soft, and it is easy to break the interval layer when doing things such as side skid brakes. In general, today's skaters use 97A-103A wheels. This kind of hardness wheel is suitable for smooth marble and relatively flat roads, as well as U pools, platforms and other props. Wheels such as 85A at smooth leveling are also soundless. But in rough places and on the U pool, there will be a huge rumble(this sound often makes the racer boil). The transparent or translucent wheel does not use 103A. It is too hard and will burst. It is best to use only props made of all WOOD materials. Followed by the diameter, the 38-40 mm wheel is now used by very few people. This wheel starts and accelerates quickly, but the stamina is small, and it is only suitable for very flat roads. It is characterized by a fairly flexible movement. Friends who like small movements can try. And the rebound, the rebound of the wheel is very important. Although there are no parameters to refer to. However, the stronger the rebound, the stronger the ability to overcome obstacles. If you don't know how well your wheels bounce back, you can do a little experiment. Remove the bearings in the wheel, you throw the wheel hard on the ground, rebound the high wheel, the wheel will bounce to the ceiling, the bottom rebound wheel, will only jump on the ground two times. On the smooth ground, perhaps, the two wheels can run as fast, but in the slightest rough road, the advantage of high-rebounding wheels can be immediately demonstrated. Our main products are long board wheels, skateboard wheels, shock absorbers and skateboard accessories and some other products. And we also have a plastic injection plant to produce some skate board accessories, such as the core of pulley. For more information, please click here.