This elbow is a brass fitting for polyethylene pipes and multilayer pipes. It is used for fixing pipes that have an external thread on their end, changing the direction of the pipe at a right angle of 90 degrees when mounted to the wall. It consists of four parts: an elbow-shaped body, an internal thread, a wall plate with holes for attaching the elbow to the walls, one insert with rings for a tight seal, a washer and a nut. For multi-layer pipes, a Teflon joint is also needed. It secures the entire assembly when tightening the nut around the clamp ring. This product is available in one 16mm diameter.