Hagan Fatties Muscle Car arm: The arm features a bold design incorporating our bullet adaptor to mount any Fatties mirror head, a multi-angled tapered base, and three progressively smaller machined holes in the upright angled pillar. Our goal was to develop a design that not only looked great on its own, with but also to give builders the ability to bring the car design into the mirror. This is accomplished by providing six CNC cut metal discs that can be painted the color of the car and installed into the mirror.