To use the internal nut, simply align it with the corresponding threaded pipe fitting and tighten it using a suitable fixing . The hexagonal shape allows for easy grip and application of torque, ensuring a secure and stable connection. These lock nuts are suitable for bathroom installations, providing a reliable seal for water fixtures and fittings. Features - ColorGolden -Material:Brass - Size: 3.10X2.00X0.60cm/1.22X0.79X0.24in -Inner diameter: 20 mm -Note: 1/2in screw - sealing: the internal thread provides a seal compared to straight threads, ensuring leak proof connections -Wear resistance: these products have compressive strength, wear resistance, excellent performance and high reliability -Userfriendly design: designed for easy tightening, these nuts make installation and replacement tasks quicker and more efficient -Durable brass construction: constructed from brass, these nuts are built to withstand high temperatures and harsh conditions -Wide range uses: ideal for sealing and connecting pipes, these nuts are suitable for use in gardens, water tanks, washing machines, air conditioners, water heaters, and storage areas Package list: 6 x hexagonal lock nuts