High quality, smooth-core corrugated flexible pipe that will not kink. An excellent choice for the DIY hobbyist! Extremely flexible and resistant to crimping or collapsing around tight curves. For best results, use with barbed fittings and clamps. Pre-cut into a 6 foot length and packaged for convenience. Ideal water line fo basalt columns, decorative fountains, and general plumbing connections requiring flexibility. Also compatible with Aquascape Ultra Pumps (400 - 800 models).