Feature●One of these kits will enable you to connect 2 tanks together another kit will enable you to connect another tank and etc.●This kit will connect (2) 100# Propane tanks together.●This can also connect 25#, 30#, 40#, 60# tanks together.Description Propane heaters 150K BTU and larger can NOT operate at 100% on just (1) 100# propane tank.