Includes one Polo entry lockset and one No.660 deadbolt. For keyed exterior doors. Both knobs locked or unlocked by key outside or turnbutton inside. Deadbolt operated by key outside and thumbturn inside. Security knobs feature full 1 in solid core throwbolt, all metal mechanisms, anti-pry shield and pick resistant 5-pin system. DOOR PREP: 2-1/8 in Cross Bore, 1 in Edge Bore, 1 in x 2-1/4 in Latch Face. BACKSET: 2-3/8 in standard and adjustable 2-3/8 in to 2-3/4 in optional. DOOR THICKNESS: 1-3/8 in to 1-3/4 in CYLINDER: 5-pin. FACEPLATES: 1 in x 2-1/4 in round corner. STRIKES: 1 in x 2-1/4 in full lip round corner. BOLT: knob 1/2 in throw, deadbolt 1 in throw. HANDING: Reversible for right or left hand doors. ANSI/BHMA: knob Grade 3, deadbolt Grade 3.