Defender Security U 9592 Door Reinforcer 1-3/4-Inch Thick by 2-3/4-Inch Backset 2-1/8-Inch Bore, 4-5/16-Inch , Stainless Steel Reinforces and repairs doors Use on wood or metal doors with mortise or drive-in latches Accommodates key-in knob locksets or deadbolts Assists in preventing forced entry Easy to install