Product Description N343-475 DPV879 SELFCLSNG GT K From the Manufacturer Stanley-National Hardware has been a leading manufacturer of hardware for more than a century. Over the course of the last 160-plus years, Stanley-National is a name that has become synonymous with quality, innovation, and customer service.A top quality line of gate hardware designed for long life and maintenance free operation.Smooth Black with excellent corrosion resistance because they are triple-protected with zinc-plate, black chromate dip and black baked on enamel finish.