Brass compression joint coupling for PE pipe,one end is compression nut and another end is male or female thread.It is very convenience to connect with PE pipe,quick installation and easy to operate do not need any other tool.Once insert the pipe to compression end,you can't pull it out unless you unscrew the compression nut.We have different sizes of compression joint coupling for your option ,we will give our best price to you and guarantee the quality at same time,we are professional manufacturer.