yes depends on the time I put in, if I do an hrs session I can easily put on 1/4 to to 1/2 inch in girth, but to keep the errections hard I have to keep putting in the hrs, like a vicious circle, is this a potential problem or is it normal but I want more length, and that I cant get, do you know about pumping, and where can I get one from in the UK, and is it dangerous.