Whether for home, farm, builder or industrial customers, National has all the right hardware in the sizes and finishes you need. With over a century of service National is committed to maintaining the highest level of product quality, innovation and manufacturing technology. Providing a reliable barrier against unauthorized entries. Bar holders are made from zinc-plated steel for durability and longevity and added strength desired for barred applications. Zinc plating offers corrosion resistance for all of your functional hardware needs. Pack of 12.