Stanley Hardware S755-240 CD921 Keylocking Hasp in Zinc plated Authorized Replacement from National Hardware Stock #N183-780 Designed to secure a wide variety of doors, cabinets, boxes and trunks Hasp only locks using key to prevent lock out; Exclusive full-width knuckle design and supporting side walls reduce sag Functions as a conventional hasp when key is not in use; All components are plated prior to assembly to enhance rust resistance Corrugated leaf has up to twice the strength of conventional flat leaf; Hold open feature eliminates uncontrolled swinging of leaf 4-1/2" zinc-plated steel key included