1. Simple and smart, kinds of models, so it can meet any string pipe requirement.
2. Even if installed, plastic pipe can rotate at random.
3. Release ring adopts ellipse design, so convenient in removing.
4. All taper pipe threads paint Teflon leakage-proof rubber, so seal property is good.
5. All TPC type directly connects hexagonal socket hole of grading belt, so it is convenient to install in the narrow.