Bought this jumbo torch head to get rid of the stick torch head I use. The rod flame seemed to take forever to climb up the 3/4" copper tube, but the huge flame gets the job done in no time. This new model has a flat area at the base where you can use a wrench to turn the head without putting pressure on the side of the valve to tighten it. Be careful and don't get carried away with the wrench, just light pressure is enough. All in all, I regret not having bought this gigantic head a few years ago good product just be sure to adjust the flame so the inner cone shaped blue flame is about 3/4 inch high.