Item Type: Coupling NutMaterial: 304 Stainless steelSpecifications: M6x1.0 12 L17mm .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1RUSTPROOF STEEL: Using excellent 304 stainless steel material, with good rust resistance and durability 2GREAT CONNECTION: Coupling nut is designed to hold two parts together, usually with threaded rods. Sturdy and suitable for indoor and outdoor use 3WIDE APPLICABLE: Widely used in home decoration, mechanical maintenance, equipment maintenance, pipeline maintenance and so on 420PCS IN TOTAL: The package contain a total of 20pcs coupling nut, enough for you to replace and use, very convenient 5IDEAL PERFORMANCE: Coupling nut is made with fine workmanship, possess compact appearance and stable performance, can make sure durability and stability