The McAlpine STW50-TUBE is a dip tube designed to be used with McAlpine STW 1½" shower traps. The dip tube is made of high-quality plastic and is designed to fit inside the trap to prevent debris and hair from entering the drain system. The dip tube also helps to create a water seal, which prevents odors from escaping through the drain. The McAlpine STW50-TUBE is an important component of the McAlpine STW 1½" shower trap system, as it helps to maintain the proper function of the trap. It is recommended to replace the dip tube periodically to ensure that it is functioning properly and to prevent blockages in the drain system. Overall, the McAlpine STW50-TUBE is an essential component for the McAlpine STW 1½" shower trap system, ensuring that the trap is functioning properly and preventing blockages in the drain system. ・ Available for 19mm, 50mm and 80mm Shower Traps ・ Suitable of use with STW range of 1½" Shower Traps ・ Full range of spare parts and accessories are available on The Plumbers Mate