NOS The NOS stainless steel bottle brackets feature brushed S.S. construction that have been deburred and cleaned on the edges so it will not scratch the bottle finish. The legs are independently adjustable for ease of installation in uneven trunk floors. The CNC machined billet aluminum release knob does not require any tools so bottle changes can be performed in a snap. The brackets also include the NOS logo on top of each one so you can proudly show off that you run the best nitrous products available.