Drip irrigation adjustable riser stake. Flexible staked riser with adjustable height up to 18 In. For use with 1/4 In. drip tubing. Compatible with all brands of 10/32 threaded watering devices. Features a rigid 8 In. plastic stake which works well in all soil conditions. Tubing Diameter: 1/4 In. Material: Plastic Height: 18 In.