where i used to work at a mechanics, trucks used to come around selling tools. anyhow one day a truck came around with this long metal ruler look like with an anchore thing on the end of it, basically a flat hook going in both directions(like an anchore) and this was for breaking into cars. One of the guys bought it and tested it out on a taxi which we were fixing and yep! enough said, these have been around for a long time..im not sure how they can get away with making and selling them?