If you have a sizable fleet of Walthers Proto cars, we offer this bulk pack with 20 diaphragms. With this pack, there are enough diaphragms to upgrade 10 cars at a discounted price, saving you $10 versus buying individually.
The Tube Diaphragms are available with 3 different base colors – Black, Silver, and UP Grey. Select the base color that matches the ends of your car. The tubes are Black on all Diaphragms.