Kwikset 6655RCLRCSK3BX Double Cylinder Deadbolt, Antique BrassOperated by key outside and inside. Security deadbolts feature full 1" solid core throw bolt, all metal mechanisms, anti pry shield and pick resistant 5 pin system. DOOR PREP: 2 1 8" Cross bore; 1" Edge Bore; 1" x 2 1 4" Latch Face. BACK SET: adjustable 2 3 8" to 2 3 4". DOOR THICKNESS: Fits 1 3 8" to 1 3 4" doors. CYLINDER: 5 pin. FACE PLATES: 1" x 2 1 4" round corner. STRIKES: 1" x 2 1 4" round corner. BOLT: 1" throw. HANDING: Reversible for right