This internal aluminium spigot forms a seamless joint when connecting different pipe sections. With regular pipe couplings, an uneven surface occurs when making a joint, which can be prevented with this coupling. At Buisklem, this internal pipe coupler is available in various diameters and different RAL colours for a neat finish to your project. The available sizes are suitable for a pipe diameter of 42 or 60 millimetres with different wall-thicknesses.