This 69 degree bend is used to create a change of direction in the soil stack. Two bends together can be used to make an offset, or swan neck as it is sometimes called, in the soil or rainwater stack. This bend is available in 100mm and 150mm size options.As Halifax pipes and fittings have no sockets, couplers are required to connect this bend to a pipe. A full dimensional drawing of this product can be found in the  Halifax technical catalogue.