The McAlpine 1.1/4 Solvent X Push Fit Adaptor Straight S18-Abs" is a plumbing fitting designed to connect a 1.1/4 inch solvent weld pipe to a push fit pipe. The "S18-Abs" in the description refers to the specific model of the adaptor, which is manufactured by McAlpine, a UK-based company that specializes in plumbing and drainage products. The adaptor is designed with a straight configuration, meaning that it forms a straight connection between the two pipes. The solvent weld end of the adaptor is designed to fit inside a 1.1/4 inch solvent weld pipe, while the push fit end of the adaptor is designed to fit onto a push fit pipe. The push fit end of the adaptor is made with ABS, which is a type of plastic commonly used in plumbing applications due to its durability and resistance to chemical corrosion. The McAlpine 1.1/4 Solvent X Push Fit Adaptor Straight S18-Abs" is designed to provide a secure, leak-free connection between solvent weld and push fit pipes, making it a useful fitting for a variety of plumbing applications. Available in 1.25" and 1.5" sizes | McAlpine S18-ABS 1.25" Straight Connector - Pushfit x Solvent-Weld in White