Super Special formula grippy Urethane, Blue anodized aluminum hub, 62mm x 38mm. Indoor race formulation Full size Aluminum Hub with less Urethane for greater top end speed the fastest wheel in the world. With intense grip and the ultimate in speed, the Shaman is the #1 indoor speed wheel. Aluminum anodized hub is designed to withstand bearing oil corrosion and thermal heat.Low profile wheel radius results in high velocity performance that is unmatched in the industry. Made in the USA The natural color is untinted urethane, and so different batches may show some variation in colors. The item "Sure-Grip Shaman Wheel (Set of 8)" is in sale since Friday, March 15, 2019. This item is in the category "Sporting Goods\Outdoor Sports\Inline & Roller Skating\Wheels". The seller is "defiance1983" and is located in Canoga Park, California. This item can be shipped worldwide.