This single cylinder provides enhanced security for your home with key access from one side and a convenient turn-button knob on the interior. Crafted with a polished brass finish, this lock is suitable for both left and right-handed doors, offering versatile installation options. Designed to fit standard American door preparations, it accommodates both 2-3/8-inch and 2-3/4-inch backsets, ensuring compatibility with a wide range of existing setups.The robust construction features a 1-inch latch bolt with a nickel plating and a 5-pin high-security core, delivering reliable performance and peace of mind. This is ideal for doors with a thickness of 1-3/8-inch to 1-3/4-inch and includes a 1-inch by 2-1/4-inch radius corner faceplate. Proper door preparation requires a 2-1/8-inch diameter cross bore and a 1-inch diameter edge bore for a secure and seamless fit.Meeting standards, this is specifically rated for residential security applications. Its a mechanical lock, not designed for use with digital entry handles, offering a traditional and dependable locking solution. Enjoy lasting quality with a ensuring years of reliable operation and aesthetic appeal for your homes entryways.