Black Steel Nipple Pipe, Threaded Pre Cut Pipe Connectors, 1/4 in x 1-1/2 in (Pack Of 10) - Walmart.com
Amazon.com: Supply Giant OQCB1200 1/2 Inch Assortment, Malleable Threaded Nipples,Steel Pipe Fittings for All Your DIY Vintage Shelving Projects, Black (Includes 6 of Each Size, 1-6 Inches 66 Pieces in Total) : Everything Else
Amazon.com: Supply Giant OQCB1200 1/2 Inch Assortment, Malleable Threaded Nipples,Steel Pipe Fittings for All Your DIY Vintage Shelving Projects, Black (Includes 6 of Each Size, 1-6 Inches 66 Pieces in Total) : Everything Else
Amazon.com: Supply Giant 1 Inch Black Pipe Assortment, Heavy-duty Malleable Threaded Nipples,Steel Pipe Fittings for All Your DIY Vintage Shelving Projects (Includes 6 of Each Size, 1-6 Inches 66 Pieces in Total) :