A Chris Miller special. The Bones SPF Miller Vortex Wheels are specifically formulated for what you skate. The 100's are made with the Bones Skatepark Formula Slims, giving you more control and way less flat spots. Made in the U.S. at the Bones factory in Santa Barbara, California, the Miller Vortex are skater engineered and designed. Sizes available as seen below. Feature Bones, vortex, and Miller graphic in black and white.