ProSource Door Knob Lockset, Design: Tulip, Knob Handle, Backset Type: Adjustable, Backset Size: 2-3/8 to 2-3/4 in, Edge Bore Diameter: 1 in, Cross Bore Diameter: 2-1/8 in, Door Thickness: 1-3/8 to 1-3/4 in, Latch Type: 2-Way, Strike Type: Full Lip Round Corner, Strike Size: 44 x 57 mm, Bolt Throw Size: 12.5 mm, Projection Size: 61.4 mm, Screw Mounting, Metal, Polished Brass, Suitable for: 1-3/8 to 1-3/4 in Thick Door.