The 5.5 Inch By 5 Inch Rubber Reducer Insert is a practical and versatile product designed to fit most makes and models. Made from durable black rubber, it provides a reliable solution for reducing measurements. With measurements A, B, C, and D of 6 inches, 5.5 inches, 5 inches, and 1.5 inches respectively, this rubber reducer insert offers a secure fit and ensures optimal performance. Sold individually, it is a convenient and cost-effective choice for various applications. Trust this reliable rubber reducer insert to meet your needs and provide a reliable solution.