John Guest Speedfit 12mm Union Elbow - PM0312E (Pack of 10)John Guest equal elbow push fit fitting connects two equally sized pipes to form a 90 pipe bend. Fast and simple to install, John Guest Air and Pneumatics creates an instant connection and airtight seal without the need for tools, hot works or sealing agents. Air piping systems can be set up and installed 50% quicker than traditional methods. The unique collet locking design firmly and securely holds the pipe in place without deforming the pipe or