National Hardware 2.16 in. L X 1.58 in. D Plastic Closet Rod Socket Set (Pack of 75).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. UPC: 038613211490 Manufacturer Part No: N211 490 Brand Name: National Hardware Adjustable: No Material: Plastic Product Type: Closet Rod Socket Set Color: White Minimum Length: 1.