Upgrade your vehicle's braking system with these Beck Arnley brake shoes. Designed for the rear left and right side of 1963-1980 MG MGB, these shoes are made with non-asbestos organic material for a quiet and effective performance. The shoes come in a pack of four and are compatible with various interchange part numbers such as 30-437-01, S437, W437B, BS93, 437, and 437PG. These vintage brake shoes are perfect for any car enthusiast looking to maintain the performance of their vehicle. Made in the United States, the shoes feature a quiet operation and are an OE/OEM part number for GBS602, GBS595, GBS520, and GBS740. The item width is 1.75 inches and is suitable for placement on the rear, left, and right side of the vehicle.