OBX Heavy Duty 3.5'' (3-1/2") Stainless Steel Exhaust Muffler ClampOne New Aftermarket Replacement Heavy Duty 3. 5" Stainless Steel Exhaust Muffler Clamp Universal Fit This heavy duty exhaust muffler clamp is a universal fit, stainless steel (not chrome plated) band clamp designed to securely connect exhaust pipes, muffler sections, and exhaust stacks on tractors, agricultural equipment, construction equipment, and other machinery with 3. 5" (3 1 2") exhaust pipe connections. Solid stainless steel construction