2 in. Dia x 100 ft. MM Sizing Black Non Kink, Corrugated, Flexible PVC Pond TubingFlexible Black Corrugated Non Kink PVC Water Garden Pond Hose (MM Metric) This tubing works best with Alpine, Atlantic, AquaScape, Calpump, Laguna, Lifegard, Little Giant, and Tetra Products. Due to variations in fittings, some buildup may be required for secure fit. Our Non Kink Flexible PVC tubing commonly referred to as non kink, kink free tubing water garden hose, pond tubing, flex pond and corrugated tubing is perfect for use with water gardening