Features: Crafted from corrosions resistant brass, these hex lock nuts ensures secure and long time seal for various plumbing connection, available in multiple size to fit diverse installation needs. Designs for quick and easy installation, the 20pieces brass nut set easy maintenance tasks with its standardized threading, offering compatibility with sinks, faucets, and standard pipe fixtures. Ideal for professional plumbers, enthusiasts, and industrial maintenance teams requiring brass pipe fittings for residential, commercial, or mechanical applications. For securing connection in bathroom fixtures, kitchen sinks, water heaters, and washing machines, these brass compression nuts withstands high pressures environment and frequent use. This comprehensive set of brass hex nuts eliminates the need for multiple purchases, providing solution for leakproof pipe joints in both new installations and repair projects. Specifications: Materials: Brass Size: Diameter 1.9cm/0.75inch, 1.27cm/0.5inch, 0.95cm/0.37inch, 0.63cm/0.25inch, 0.31cm/0.12inch Package Includes: 20pcs Brass Locking Nut note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.