Wheel Pros 353K133H Wheel Center Cap. Add the perfect top to your unique wheels from Moto Metal with their decorative center caps. Made of durable plastic with black or chrome finishes and either the "M" or "Moto Metal" logo in the center, these caps look great with a variety of Moto Metal wheels. Help keep your hubs and lug nuts protected with an assist from the Moto Metal center caps best suited for your wheels.