Features: 1. 304 stainless steel construction with multilayer coating for durability and corrosion resistance. 2. Provide the highest level of residential security, and support keying function on both sides. 3. One side is locked and unlocked with a wrench, and the other side is turned the knob. 4. The surface is processed with brushed, beautiful and practical technology. 5. The locking core and the panel are integrated together, it is convenient to install. 6. It is normally used in front and rear doors, such as solid wood doors or steel wood doors. 7. The outer ring of the lock head can rotate freely and prevent prying. Specification: Condition: 100% Brand New Item Type: Single Cylinder Lock Optional Color: Silver, Bronze Internal Components Material: Galvanized Steel Exterior Parts Material: Stainless Steel Lock Tongue: Anti-sawing lock tongue, 1in extension, using zinc alloy die-casting material, built-in high-strength anti-sawing lock core Lock and Key: 5-Hole marbled copper lock core With 3 mechanical keys Applicable Door Direction: Left-Open / Right-Open Doors Applicable Door Thickness: Approx. 35 - 50mm / 1.38 - 1.97in Lock Body Center Distance: Adjustable to 2.4in or 2.8in Function: Open and close the single cylinder lock with key or knob Package List: 1 x Single Cylinder Lock 1 x Lock Body (Adjustable center distance) 3 x Key 1 x Mounting Plate 1 x Screw Package 1 x Manual . Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.