The Hope Mono M4 Rotor is available in the one piece steel or the two piece floating rotor style. The rotors are designed to emulate a circular saw. The inner piece of the floating rotor is available in Black, Blue, Gold, Red, Silver, or Gun Smoke Anodized. All colored rotors except Black take an extra week to ship. Black is always in stock. Also note we find Gun Smoke to be more bluish silver than the picture indicates.