Material: PP plastic Tube mouth size: 1/4inch What you get: 5 x water tube fitting connector Instructions for use: 1.No tools are required when connecting the quick connector; 2.Simply insert the tube into the bottom; 3.When removing the pipeline,the fixed blue card needs to be taken out first; 4.Disassemble the pipe and press the piston to pull the pipe, then pull it out. Note: It is recommended to use professional pipe cutter, which can reduce the leakage caused when PE pipe is connected with fast joints.