For the money, it is excellent and convenient even in tight spaces. Of course, a professional should also have another professional tool

A good device with temperature adjustment, convenient and small, comfortable in the hand. I haven't tried it on large diameters, but it generally sticks well. I think its molds are a bit small in depth, and I don't think it's suitable for many uses. I would like a larger box so that the cable doesn't get squeezed, and I'm not sure if the plastic base will have a long lifespan. Update 17/1/22: After many uses and in dimensions of f50, I can say that it continues to perform with positive results