Whether you're training or competing, these aerobar extensions are engineered for performance. They feature a rock-solid alloy construction, which allows them to withstand the increased pressure and intensity that's associated with racing. Coming equipped with an R-Bend design, these offer a greater choice of riding positions as well as increased comfort, so you can get the best performance out of every ride. Manufacturer's Part Numbers: 67000050005010 Black One Size 355mm 5 Degrees 67000051000010 Black One Size 355mm 8 Degrees