We have had Bauer locks on 2 different truck toppers. We have replaced 2 of the locks and repaired two. I am not sure they are an improvement over the Fastec locks . We installed a piece of 4" PVC pipe to the underside of our trailer. One end of the pipe has a glued on pipe cap and the other end has a clean out fitting with a screw in pipe plug. Inside the pipe is a key lock box containing vehicle , topper and trailer keys. Only needed to use them one time so far .