Sold in packs of 8, with 2 skateboard bearings used per wheel to enable it to spin on the truck's axel. Available in a variety of ratings, including ABEC5, ABEC-7, ABEC-9, ABEC-11, and Ceramic, Swiss, Super Swiss Bearings. We stock top brands including Bones Reds, SFK, Mini Logo, Spitfire, Independent, and Bronson