Compression Fittings are a fitting used to connect two tubes or thin-walled pipes together in plumbing and electrical conduit systems. When joining two pipes made of different materials, fittings made of one or more materials that are compatible with each other and suitable for the connection will be used. These fittings have many other sizes and designs in them. To protect Compression Fittings from any damage while transportation, we pack this in a sturdy box.