These clamps are of very poor quality. They have a kink that prevents proper clamping, leading to leakage. In my photo you can see that the ends that wrap around the dowels are not straight with the section of the body but are spot welded at an angle. I returned these to Revain and bought another brand from Revain "Hilitchi" which turned out to be very well made and even came with a socket wrench. Don't buy that junk, buy Hilitchi, they're much better.
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