RSD Tracker Gas Cap - Machine Ops 0210-2007-SMC Packed as much style as RSD could into the gas cap line. Each CNC machined design is unique and with over a dozen to choose from, there is sure to be one to match your style. Screw-in vented cap Laser engraved Roland Sands Design Interchangeable RSD logo badge (black and brass) (except Vintage style)