APPLICATION RANGE:The straight joint is suitable for plug-in quick connection of most PVC water pipes, including garden, irrigation, sewer, balcony, swimming pool and other unthreaded pipe fittings.DURABLE DESIGN:1. The inside of the push-in socket connector is smooth, which reduces friction and improves the water flow rate. Socket end is used to connect non-threaded and externally threaded pipes or pipe fittings.2. Made of thick and durable UPVC material, which is corrosion-resistant, high-strength, weather resistance, wear resistance, and lighter in weight than metal fittings.NEED ATTENTION:This is Japanese JP Standard pipe joint, please choose the appropriate fitting size for your water pipe before ordering. If used with glue (not included here), it will look better and last longer after 24 hours.