I ordered two of these and while the first one worked great the second did not. The second one got stuck in the backwards position-the position you use to set your own code. I have about 10 different locks like this and never had this happen before. When I went to set my code there was something resistant about the tumblers with the numbers. Next thing I know it was stuck and even going back to the default of 0000 wouldn't undo it- so into the garbage it went. The first one works as expected. So basically its buyers luck when you purchase these.