The McAlpine STW70LN is a standard locking nut designed to be used with McAlpine STW 1½" shower traps. It is designed to securely fasten the trap to the waste pipe and prevent any leaks. The locking nut is made from high-quality materials and is designed to be durable and long-lasting. It is easy to install and is suitable for use with a variety of plumbing systems. The STW70LN is designed to ensure that the shower trap remains securely fastened to the waste pipe, preventing any potential for leaks. This helps to ensure that water flows away from the shower or bathtub quickly and efficiently, preventing any standing water or blockages in the drain. Overall, the McAlpine STW70LN Standard Locking Nut for STW 1½" Shower Traps is an important component of the shower trap system, ensuring that the trap remains securely in place and the bathroom remains free from any unwanted leaks. It is a great addition to any bathroom using a McAlpine STW 1½" shower trap. ・ Available in 70 or 85mm sizes ・ Suitable for all 1½" Shower Traps ・ Suit trays with a maximum thickness of 22mm