Universal Muffler Clamp,Round 3.5"Min., Stainless Steel With High Temp Silicone Insulator. These Premium Quality Universal Polished Stainless Steel Mounting Clamps Can Be Used On Almost Any Muffler/Silentcer Canister. They'Re Lined With A High-Temp Silicone Insulator For A Secure Fit. Available In Two Size Ranges.