Superior Brass Heritage Door Lever Entrance Set Entrance Lock is defined as a lock that can be unlocked by a key from the outside when the outer knob/lever is locked by a turn button on the inside knob/lever. The inside knob/lever is always unlocked Entrance Lock Function - Outside key unlocks the outside knob/lever, the inside knob/lever is free at all times, push button locks the outside knob/lever Features: Patented SS Ball Bearing Mechanism Specifications: Material: Solid Brass Height: 200mm Width: 50mm Projection: 60mm Centre to Centre: 47.6mm 85mm Available Finish: Polished Brass Polished Chrome PVD Brass Satin Chrome