The McAlpine WP1T is a white plastic plug with a rubber seal, similar to the WP1 plug. However, the WP1T has the added feature of a test point, which allows for easier testing and maintenance of the plumbing system. The test point on the WP1T plug is a small opening on the top of the plug that can be easily removed or unscrewed. This allows for easy access to the interior of the pipe or fixture for testing or cleaning purposes. The test point also helps to release any airlocks in the system. Like the WP1 plug, the WP1T is designed for use in plumbing systems to prevent the flow of water or other fluids. It is made from durable plastic material that is resistant to corrosion and damage from chemicals. The rubber seal provides a watertight and secure fit to prevent leaks and smells from escaping the pipe or fixture. The WP1T plug is easy to install and remove, making it a convenient solution for plumbing maintenance and repairs. It is designed for use with McAlpine products, but can also be used with other compatible plumbing systems. Overall, the McAlpine WP1T plug with test point and rubber seal is a useful and versatile solution for plumbing systems. Its test point feature allows for easy testing and maintenance, while its durable plastic construction and watertight rubber seal make it a reliable option for preventing leaks and odours. ・ Available in 1½"and 1¾" ・ Available with or without triangle ・ Manufactured in white polypropylene