These brand new Bones Wheels wheels are built to last! Coming in at 52mm in diameter and 103a in hardness, these bad boys are ready for action and packed with steez. Bones Wheels STF V3 Retros White Skateboard Wheels - 103a are sold in (1) set of four (4) wheels. You know, because that's how many wheels you need on a skateboard. Speaking of skateboards, did you know that Warehouse Skateboards sells those too? We're not all wheels, and there's plenty of wood to go around.