Includes one set of 5 ft. clear PVC foam sticks designed with PVC pipe and fittings, safe for all chemical applications. Foam chamber and stick are made of 3/4 clear PVC with 9 application holes spaced six inches apart. Includes air & fluid in-line PVC check valves, 3/8 push to connect ball valves for control. Includes two sets of Single Mount Plate Kits.