Polo Entry Smt Venetn Brnze Bx For keyed exterior doors. Rounded design to proportionally fit the palm of the hand. Both knobs lock or unlock by key outside or turnbutton inside. Security knobs feature full 1" solid core throwbolt, all metal mechanisms, anti-pry shield and pick resistant 5-pin system. Locksets with "SmartKey" (denoted SMT) feature allows, in 3 steps, locks to be re-keyed to a spare set of keys.