Extremely durable for everyday wear and tear. Firm-roll wheels feature little rolling resistance for easier pushing. Special arch to tread gives small footprint on hard surfaces and a larger "snowshoe' print on softer surfaces like grass and carpet. Ideal for sport use. The 3-Spoke Ultra light aluminum built hubs are machine-lathed so the outside rim is perfectly balanced and the bearing space is exactly parallel. EPIC hubs are bright-dip anodized to avoid scratching and keep it looking great for the life of the wheel. Aluminum casting and other hub creation processes used to create hubs are not able to achieve this tight tolerance while maintaining strength. Epic hubs are made of 6061 T-6 aluminum and rated for up to 500 pounds.