The Kato 805103 N Stainless Steel Car Diaphragms in Silver are a pack of 2 model train accessories designed for N gauge model railroads. Made of steel and compatible with the Kato 805103 model, these diaphragms are perfect for model train enthusiasts aged 17 years and up. The sleek silver color adds a touch of realism to train cars, enhancing the overall look of the model railroad layout.