CL210K Codelock Mechanical All Weather Pushbutton Hex Knob W/Deadbolt W/Key OverideProduct Description Weather proof stainless steel construction. Backup cylinder with 2 keys included. Non Handed Deadbolt Easy to fit, with all parts and fixings included. Suitable for internal and external use Great for residential or commercial use. Over 8,000 codes to choose from. Code can be changed quickly, as required Adjustable Backset 2 3 8 2 3 4 Heavy duty construction. No batteries or wiring, fully mechanical push button operation