Micro-tubing (also known as spaghetti, feeder or distrbution tubing) is available in a variety of sizes, coil lengths and materials (polyethylene or vinyl). The polyethylene (Linear Low Density Polyethylene) is stronger and a little stiffer and works well in all weather with barbed 1/4″ micro-fittings. Vinyl tubing is a lot more flexible but will not adhere to the micro-fittings as well especially in high temperatures and pressures. Micro-tubing is often used as a feeder line from the supply tubing to the dripper or jet. A full range of micro-fittings are available for use with the micro-tubing.