It is essential that installers use the correct angle bend to ensure optimum flow rate through the system so your drainage system can work to the best of its ability. Sold in a range of different angles, the Stainless Gutta 85 degree bend is a tool to create a swan neck that is custom designed to your property. When two bends are fitted together along with a small section of downpipe, it will ensure that your downpipe runs concurrently from the running outlet alongside the external fa§ade for a neat looking finish.