The McAlpine ST28L-ISO is a 1 1/4" x 40mm multifit straight connector that is used in plumbing installations to connect two sections of pipe together. The ST28L-ISO connector features a multifit design, which allows it to be used with a variety of different pipe sizes and types, making it a versatile option for many plumbing applications. The connector also has a 1 1/4" diameter on one end and a 40mm diameter on the other end, allowing it to join pipes of different sizes. The connector is made from high-quality materials, ensuring its durability and longevity. It also features an ISO-9001 quality management system certification, which ensures that the connector is manufactured to the highest standards. Overall, the McAlpine ST28L-ISO 1 1/4" x 40mm multifit straight connector is a specific plumbing fitting that is used to join two sections of pipe together. Its multifit design and high-quality materials make it a versatile and durable option for many plumbing applications. ・ Available in 1¼", 1½", and 2" sizes ・ Multifit Fittings suit all plastic waste pipes to BS EN 1451-1:2017 and BS EN 1329-1:2020 and copper pipe and lead pipe