This set includes 20 barbed coupling connectors made specifically for 1/2 in. drip irrigation tubing. Crafted from durable, high-quality plastic, these fittings resist deformation and breakage to deliver a long, reliable service life. They fit most standard 1/2 in. drip irrigation pipes with an inner diameter between 0.560 and 0.600 in., making them compatible with a wide range of common half in. tubing options. Installation requires no glue, tools or clamps; the barbed ends tightly grab onto the tubing to form a secure, leak-proof connection, and heating the end of the hose can simplify the fitting process further. These couplings are perfect for connecting components of a drip irrigation system, suitable for use in gardens, greenhouses, flower beds, patios and various agricultural watering setups. Color: Browns/Tans.