Mallory 341 Rotor/Shutter Wheel (Flat Cap) Developed specifically for flat distributor caps Delivers unrestricted energy flow Features corrosion resistant brass inserts and stainless steel rotor springs Ideal for today's high energy ignitions Made of an innovative, space age plastic with high dielectric strength Designed to provide high impact resistance to prevent damage Made from high quality material Facilitates easy installation Corrosion resistant Easy to use