NOS OEM fuel injection plates ensure a steady, precise metered flow of nitrous and fuel for reliability, backed with years of laboratory research and dyno and drag strip testing. NOS injector plates are available for those who want to build their own system or upgrade their current nitrous system, without the expense of buying a new complete system. Unless specified, NOS injector plates incorporate a low-profile (1/2 in. thick) plate, and are constructed of solid billet or die-cast aluminum with a durable black finish.