ORBIT UNDERGROUND 3892010B Riser/Adapter (10 Pack), 12" Provides a mount upon which low-flow sprinklers, Sprayers, micro-spray jets, misters and some adjustable bubblers are mounted Must be used in conjunction with a 13-inch support stake or 14-inch stabilizer stake Riser has 1/4-inch barbed inlet Mount sprinkler, sprayer, micro-spray jet, Mister or bubbler by screwing them into the open end of the riser Built to last