Pentair R171099 Hi-Flo Tubing Replacement Kit Rainbow Automatic Chlorine/Bromine In-Line Pool and Spa Feeder Hi-flo tubing replacement kit Fits Pentair Rainbow automatic chlorine/bromine in-line pool and spa feeder models 320, 322 Allows greater dispensing rate Includes 6-feet of 1/2-inch inner diameter tubing, 1/2-inch check valve and all fittings Measures 18-3/4-inch length by 2-1/2-inch height by 13-inch width