The Bones STF Duncombe Bork Blue V1 Wheels are specifically formulated for what you skate. The Bork's are made with the Bones Street Tech Formula, giving you more slide-ability and way less flat spots. Made in the U.S. at the Bones factory in Santa Barbara, California, the Bork's are skater engineered and designed, Jake Duncombe style. Graphics at one side. Sizes available as seen below. Wheels sold in set of four.