Black Nickel Entrance Lock Deadbolt Set - Reef SeriesA sensational smoky black nickel colour in a highly polished finish Robust construction of solid zinc alloy Suitable either for left or right handed doors Entrance set: key locking from outside & a twist lock inside. Double cylinders deadbolt: key locking from both side Keyed alike for multiple sets is available at no extra cost 65mm square backing plate fits most existing doors. Deadbolt backset adjustable 60mm or 70mm Comes as a complete set,