NU-SET 2125-3 Jimmy Proof Style Inter Locking Deadbolt Lock with Double Cylinder, Bronze 2 Hardened steel interlocking throw bolt for pry-resistant Hidden tamper-resistant shutter guard against force entry if cylinder is removed Zinc alloy die casting steel casing resists tempering and weathering 5 Pin Kwikset keyed cylinder for added pick resistance Fits door thickness between 1-3/8-Inch to 2-3/8-Inch