Steelworks Corporation YAZ1014 Boltmaster Coupling Nut 5/8" - 11 X 2-1/8" Zinc Coarse Steel Bulk This item is Boltmaster Coupling Nut 5/8 " - 11 X 2-1/8 " Zinc Coarse Steel Bulk Used For Rough Plumbing,Pipe And Conduit Accessories The product is manufactured in China