Durometer tells you how challenging the wheel is. It can be listed while in the title of the wheel, which is followed by a letter (generally possibly “a” or “b”) (ex. 75 mm / 78a). This letter points out what scale was accustomed to measure the wheel. “a” wheels are https://skateshoes09742.blog-mall.com/16798560/detailed-notes-on-skateboard-wheels