【Superior Brass Construction】 Made from brass, this Hex Female Lock Nut offers durability and resistance to corrosion, expectations in terms of quality.【Dual-Purpose Fastener】 Serving as both a lock nut and a spacer, this versatile plumbing fitting simplifies installation and enhances the functionality of your plumbing system.【Efficient Hex Design】 The hexagonal shape of this lock nut allows for quick and easy tightening and loosening with standard tools, ensuring a secure and long-lasting connection.【Individual Packaging for Instant Use】 Packaged individually for convenience, this lock nut is ready to use right out of the package, making it suit for quick repairs, replacements, or DIY projects.Material: BrassSize:Threaded:   G1/2 " (20 mm)Hex Width: 0.91 " (23 mm)Height: 0.26 " (6.5mm )Package Content:8 x Pipe Fitting Hex Locknuts