Each lock nut in this set is designed for easy installation and removal, thanks to its hexagonal shape and internal threading. The design adds an extra layer of security, preventing the nut from loosening over time. These lock nuts are an essential addition to any toolkit, ensuring a secure and stable connection for various mechanical applications. Features - ColorGolden -Material:Brass - Size: 3.10X2.00X0.60cm/1.22X0.79X0.24in -Inner diameter: 20 mm -Note: 1/2in screw - thread design: internal threads offer a tighter and more secure seal compared to straight threads, ideal for high pressure applications -Convenient use: they are convenient and quick to use, suitable for use in homes, factories and other places -Easy to use: the fastening nut design makes installation and replacement tasks more straightforward and secure -Durable construction: these nuts are strong and resistant to high temperatures, ensuring long term durability -Versatile applications: suitable for sealing joints and pipes, these nuts are widely used in water tanks, air conditioners, washing machines, water , and storage rooms Package list: 6 x hexagonal lock nuts