Aquascape high-quality Kink-Free Pipe is ideal for recirculating water in ponds, waterfalls, and other water features without the use of PVC glue. The internal spiral prevents crushing while the smooth inner wall reduces friction and maximizes water flow. Aquascape Kink-Free pipe provides durability and flexibility, making installations quick and easy in a wide variety of situations. Kink-Free Pipe Works best when used with traditional stainless steel hose clamps and barbed fittings, forming water-tight seals. Aquascape makes it easy to indicate pipe diameter size by using the color coding on the internal spiral on the inside of the pipe, making it easy to find fittings and matching sizes during various installs.