Contains all parts necessary to repair a direct air line hose assembly. Each kit contains 1 17-350 single foot air chuck, 1/4" female NPT, 1 21-122 male hose end 1/4" ID hose x 1/4" NPT, 1 21-422 hose splicer, 1/4" ID hose and 3 band style hose clamps, fits 3/8" ID hose.