It was Marshall Lumsden who said that at no time is freedom of speech more precious than when a man hits his thumb with a hammer. He had a point, too. Never will you hear such a stream of pure rage as when the contented whistling of the working man switches suddenly into the explosion of pain and cursing which mus surely follow a hammer blow to an innocent thumb. We've all done it, and maybe this is how new curse words are invented! A great design which makes the ideal gift for any home improvement enthusiasts, engineers, mechanics or workshop employees and owners.