I purchased these as one for myself and the other two for Xmas presents for my two sons. None have been used, as of yet, but I know the real benefit of this type of hand tool. When having to fitting any material around intricate shapes, to get it to fit perfect is something that gives frustrating responses to the person doing the job. Accurate fitting, is what this tool will assist and I have no regrets with my purchase as I t will make life much easier. I have used tools similar to this, year...