All Essor road wheels are designed in the USA, made of carbon fiber to offer optimal strength and stiffness. Sustainable, reliable and scientifically designed for optimal performance, Essor wheels are a top choice for cycling enthusiasts. With hubs and spokes built for maximum durability and weight consciousness, Essor wheels are designed to make your bike lighter, faster and more aerodynamic. Road wheels are available in 3 sizes: 32mm (Pace), 46mm (Rush), and 66mm (Dash).