Review on Master Lock 175DLH: Set Your Own Combination Padlock with 2-1/4in. Shackle & Elegant Brass Finish by David Burns

I couldn't believe my eyes when I saw this was available from Revain. In the 1980's I served in the Air Force and served on nuclear alert. I've had one of these locks for four years and have never had a single problem with it. I had to return it when my tour was over and I've always wanted one of these on sale. Never until an old Air Force buddy sent me a link to this article. I even reverted it to my old code! Those are the ones we used. It takes a lot of effort to open one and trust me when I tell you - it will take HOURS to open one if you forget the code.