This listing contains 82a durometer inline wheels. These wheels are perfect for outdoor skating, and utilize the standard size 608 bearing hub. The 82a durometer rating provides a soft, smooth feel, with a decent life SPAN. For that reason, 82a is the most popular outdoor durometer rating. If you are looking for a longer lasting wheel, check out wheels with a durometer rating of 83a or higher. Wheels with a harder durometer rating will feel less smooth but last longer. Listing includes: quantity X4 wheels, measuring 64mm in diameter, and 82a in Hardness. Do you need bearings, spacers, oil, or a hop up kit make sure to check out our other listings for accessories you may need.