5 pipe connectors and 1 end cap: 3/4"-3/8" XH 1/2"-3/8" DXH 3/8"-1/4" XH 3/8"-1/8" XH 1/4"-1/8" XH 1/4" XH end cap These devises connect different diameter threaded pipe or tubing and make all sorts of other threaded connections. XH stands for extra heavy and DXH for double extra heavy. $1 a piece