Geberit HDPE 45° Connection Bend with Ring Seal Socket, which is a durable fitting used for connecting wall-hung WCs to drainage systems. 
Key Details and Compatibility
Product Type: A 45-degree angled connection bend with an integrated ring seal socket.
Material: Made from high-density polyethylene (HDPE) plastic, known for its high resistance to around 95% of standard alkalis, acids, and chemicals.
Dimensions: The connector has a diameter of 110mm (d=110mm) with an internal diameter of 90mm (d1=90mm) at the spigot end for connecting to the WC outlet pipe (nominal size DN100/90).
Function: It provides an angled connection point for WCs with a horizontal outlet, linking them securely to the drainage system. The integrated EPDM lip seal ensures a watertight, push-fit connection.
Compatibility: This part is designed for use with Geberit Duofix WC frames and all standard drainage pipes.