Please Note: All Stenner® tubes (except #7) are interchangeable with all feeders and feeder output ranges can be changed with a different tube size #7 Tube only fits single head feeders for high pressure applications. All tubes are stamped on the end of the tube with the a number indicating the tube size. Select Tube Number Above UCCP201 - #1 Santoprene® tube assembly with ends, pack of 2 UCCP202 - #2 Santoprene® tube assembly with ends, pack of 2 UCCP203 - #3 Santoprene® tube assembly with ends, pack of 2 UCCP204 - #4 Santoprene® tube assembly with ends, pack of 2 UCCP205 - #5 Santoprene® tube assembly with ends, pack of 2 UCCP207 - #7 Santoprene® tube assembly with ends, pack of 2