Material: This skateboard wheel uses PU as the material which is wear resistant and sturdy so that can be used for a long time without being damaged easily.Replacing part: The skateboard wheels with bearings are suitable to be used as spare parts to replace the old or broken parts of the skateboard.Wide usage: By using this skate board replacement part can not only repair the wheels but also can improve your hand-on practicing skills.Easy to install: The professional skateboard replacing parts are small in size and lightweight which can be installed in the long board easily.Fit occasions: The outdoor skating accessory can be used in many occasions such as skate board long board surfboard and other outdoor activities.Specification:Material: PU.Size: Approx. 6.7x5.7cm/2.63x2.24inch.Note:There might be a few color distortions due to different computer resolutions.There might be a slight error due to different hand measurements. includes: 4pcs * Skateboard Wheels.