Set of 4 gold reflector knobs; available new or aged. The aged knobs are meticulously aged. We create the correct ambered coloration on the knobs and even add the greening to the bottom of the knobs. Looks great on vintage and modern guitars alike. If you held this knob up to a light source you would see first hand the level of detail we put into aging our parts. These knobs are slightly ambered to look like they have been in thousands of bars (cigarette smoke, anyone?) While the look is sublte, it really compliments the overall effect the aging has on the knob.