The McAlpine ABS42/43G-CB is a compression straight connector made from chrome-plated brass on one end and ABS solvent weld on the other. This connector is designed to connect a pipe or fitting made of ABS (Acrylonitrile Butadiene Styrene) to a pipe or fitting made of a different material such as copper or brass. The compression fitting uses a compression nut and olive to create a watertight seal between the connector and the pipe or fitting, while the ABS solvent weld end is designed to be glued to the ABS pipe or fitting. The chrome plating on the brass provides a durable and attractive finish that resists corrosion and tarnishing, making it suitable for use in a range of different environments. This type of connector is commonly used in plumbing and heating applications where a strong, reliable connection is required between different types of materials. Overall, the McAlpine ABS42/43G-CB Chrome Plated Brass Compression Straight Connector x ABS Solvent Weld is a high-quality, reliable fitting that is well-suited to a variety of plumbing and heating applications where the connection of ABS pipes or fittings to other materials is necessary. ・ Available in 1¼" and 1½" sizes ・ Converts chrome brass pipe back to plastic