This Auger Style Patriot Exhaust Side Tube Auger Muffler Insert measures 3"D x 11"L and has been constructed using durable, naturally finished steel. Get sound control for your pipes with Patriot muffler inserts. Offered in a standard and auger style, Patriot inserts are designed to provide excellent sound control with or without fiberglass packing. Standard inserts feature a heavy-duty, 6-sided louvered core that is wrapped with high-temperature packing for long life. Slip Patriot muffler inserts inside exhaust turnouts, side pipes, or extensions, for sound control of almost any occasion.