This is by far one of the worst purchases I have made in such a high price range!  The plastic screws go into a plastic bolt tread. If you even slightly tighten them to hold, the plastic tread snaps off and breaks. If you do one turn more loose, the plastic screws fall out. I now have three broken bolt treads and two plastic screws that keep falling out. All this makes the doors crooked. I was remodeling house and it was too late to do a return. Such a waste of money.