ULTRA SECURITY Privacy Tulip Door Knob, Backset Size: 2-3/8 in, Faceplate Type: Drive-In, Strike Type: Circular, Bolt Mounting, Brass, Stainless Steel, Dimensions: 6.7 in L x 2.8 in W x 8.12 in H, Suitable for: 1-3/8 to 1-3/4 in Thick Wood or Metal Doors, Includes: Door Knobs, Latch, Strike, Installation Hardware, Lock, Keys