I modeled this up as a replacement to my E-Stop button because the place that the cord goes in had a fragile rubber seal that easily broke leaving a huge hole. This has a much smaller hole so that a cord can just go out the side. That way I didn't need to buy a completely new button just for this little problem.

Update: I had one of the screw hole posts break off on me, so I reinforced it against the side wall so it shouldn't happen again.