Used to connect pumps to filters, UV sterilizers, waterfalls and spitters. Strong and durable will not collapse due to back-pressure or reasonable weight from gravel or cover material. Black color inhibits algae formation and is hard to see once installed. 100 feet long. Size is 1 1/4 Inch X 10. Dimensions are 1.667 X 1.667 X 1.208 Plastic Tubing. UPC Code = 015561213035