Arrow M81 Entry Set with Sierra Style Levers OVERDRIVE for Removeable Core Polished Brass

a style levers. OVERDRIVE (Outside lever always locked but always free to rotate). Deadlocking latch operated from either side except when outside lever is locked by pushing turn button on inside. Key on outside or operating lever on inside releases turn button and unlocks outside lever except when has been turned in to keep outside lever locked. Inside lever always operates latch. Lock is prepared for BEST (SFIC) Style removeable core. Backset is 2 3/4. Finish is polished brass(605/US3).