YARDLOCK MBX-2016Y-3ESF Keyless Gate Lock, Zinc Diecast Body. Rigid Cast Composite Shell Flexible keyless lock - provides advanced security without the hassle of keys or pad locks. The patented (us #9528306) 4-dial internal combination gives 10, 000 possible combinations to select from Ready for all seasons - weather proof and dependable in extreme conditions, will not freeze or rust. Constructed from a zinc die cast body with a rigid cast plastic shell to ensure years of security One hand operation - the YARDLOCK can be operated with one hand from either side of the gate. The protective latch cover prevents people from reaching over the fence to easily operate the latch Keyless security - the patented keyless and battery free gate lock will provide your family with years of security access control while also operating as a lock box for a spare house key Easy and fast installation - the innovative design will ensure a perfect fit to a wide range of post sizes and can be installed at any height