Features: Elevate your home security with the robusts Door Lock, featuring a unique double locking mechanism that ensures superior protection for your property. Crafted from high quality zinc alloy and reinforced with an iron frame, this door lock is designed to fit doors with a thickness of 44-46mm, boasting a profile cylinder with precise 28 30mm diameter borehole requirements. Suitable for homeowners seeking enhanced security measures, this lock set is perfect for families looking to protect their homes against unauthorized entry. The versatile Door Lock is suitable for double doors in residential or commercial settings, requiring a bolt to secure one door before engaging the lock for added stability and peace of mind. Choose between Style A for key access from both sides for external key access only, each set complete with a lock body, hex key, and three standard keys for convenient and secure entry. Specifications: Material: stainless steel Length: about 16cm/6.3inch Note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 set Double Door Central Lock