I didn't buy this to use as an exhaust clamp, first of all. I purchased the 4 inch "heavy duty stainless steel" clamp, based on the ridiculously clean and flat braces pictured (and every size has it's OWN pictures, so it isn't a "product representaion").Well, the brace looks nothing like the pictures- the lower curve of the plate brace is very shallow, just like any other cheap brand. Also, the bottom of the brace is NOT flat and even, it was obviously bent in a hurry for cheap mass production, See full review