Price is per wheel. New 8" diameter white painted steel wheel. Size is 8" by 3.75". This wheel is used on small utility and boat trailers. The wheel is correct for 4.80-8 or 5.70-8 size tires. These have 4 bolt holes on a 4" bolt circle. On 4 hole wheels to measure bolt circle you measure from the center of one hole to the center of the hole straight across, see the picture. The center hole size is roughly 2 1/2" however the center hole does not have to be the exact same size as your hub. It just needs to be large enough to go over it so the wheel can seat flat against the hub. These trailer wheels are stud piloted, that is they center on the tapered face of the lug nuts or bolts when tightened not the center hole. Each wheel includes a new valve stem.