Round 112 degree pipe bends, also referred to as offsets or elbows are used to return the downpipe from the fascia overhang back towards the wall. Often 2 of these are used at a time to achieve the redirection of the water and this is referred to as a swan neck. The 112 degree bend is the most common bend used because it does not restrict the water flow as much as a 90 degree bend.
