Arrow Mercedes Rotary Forged? Wheels /RF? wheels are as beautiful as they are technologically advanced. These Mandrus Arrow wheels are engineered using a highly advanced manufacturing technology known as rotary forging to achieve both dramatic weight reduction and improved strength. This straightforward five-spoke design is available in classic chrome, matte black or elegant gunmetal with a mirror cut face. These aftermarket wheels are offered in 17, 18, 19 and 20 inch diameters, and in each of these sizes two widths are offered, one to one and a half inches apart, for those who prefer the performance advantages and muscular look of a staggered fitment.