1/2 INCH IRRIGATION TUBING: as a main supply line connected to a low-flow,drip-watering device;as a feeder line that branches off larger tubing or pipe. and with emitters punched into the tubing to deliver water along the line MULTIPLE CONNECTIONS: To use as a main supply line, attach to a point-of-connection device connected to the water source. To use as a feeder line, connect to the main line with a fitting; to use as a dripper line, attach emitters directly into the line MULTIPLE USES: For trees, shrubs, flower beds, groundcover, vegetable gardens, plants in pots, planter boxes, and hanging baskets; outside diameter (OD) is 0.62 in, internal diameter (ID) is 0.52 in BUILT FOR DURABILITY: Poly tubing is constructed using a layering method: the outer layer, which is exposed to the sun, and the inner layer, which is exposed to water, is made of 100% virgin content. The middle layer is composed of recycled content SPECIFICATIONS: Comes with one 500 ft. coil of 1/2 in. poly supply tubing; outside diameter (OD) is 0.62 in, internal diameter (ID) is 0.52 in