Made from aluminized steel for durability, Walker adapters are available in a variety of styles and sizes for universal application. Product Features:THE RIGHT CONNECTION -- For connecting exhaust pipe and/or tubingSMOOTH FINISH -- Burr-free construction for proper fitmentQUALITY MATERIALS--Made fromaluminized steelfor durability andlong lifeBETTER TOGETHER--Use quality Walker accessories when installing Walker catalytic converters and mufflers for a complete exhaust system upgrade