New 800 foot spool of 4 inch high pressure poly pipe. Pipe is 4-1/2 inches outside diameter and 3-1/2 inches inside diameter. Rated to 250 psi. Great for agricultural uses like field/ crop irrigation. The thick walls of the pipe makes it able to be drilled and tapped for smaller irrigation pipe to connect to. This is a new spool of pipe that is ultra heavy duty and durable and is primarily used in the oilfields. Retails for over $5000, asking $850 Firm