This is the Associated stock replacement air filter kit for the RC10GT series of nitro-powered racing trucks. The air filter is made of paper with a rubber filter adapter and a foam pre-filter.
One paper air filter element
One rubber air filter adaptor (attaches the filter to the carb)
Two small zip ties (holds the filter to the adaptor and the adapter to the carb)
One foam pre-filter (goes over the paper filter)