Master Lock DSO0703 Double Cylinder Deadbolt, Polished Brass Exclusive SilvaBond antimicrobial protected finish Security sets provide deadbolt and keyed entry knob that work with the same key Dependable security, meets ANSI grade 3 standards Polished brass finish Deadbolt four way adjustable 2-3/8-inch or 2-3/4-inch backset, square, or rounded corners