Green PVC tubing for connection between pump, UV, filter, etc. The hose is translucent allowing easy observation and maintenance of debris and blockages. Our hose is made to imperial sizing, internal diameter is as follows: 3/8 inch (9.5mm approx when converted to metric) Wall Thickness: 1.5mm. This Pisces 9mm Green PVC Pond and Garden Hose is suitable for a range of jobs around the garden, home, and pond. Highly Flexible - The hose tubing is incredibly flexible making it a perfect choice for any job. Installing and moving into place is simple and can be adjusted for tricky installations. Strong PVC Construction - The tube is made of a tough and durable thick PVC material that allows the hose to withstand the pressures of water running through it. Translucent - The PVC has a green-tinted translucent finish that makes it easy to observe for blockages and to discourage algae build-up. Dimensions - 9.5mm (3/8" Inch Approx) - 15 Metre length - selected length dispatched as a continuous length.