The Mr. Heater 2 Tank Hook Up Kit is to connect two external propane tanks. It includes a 30-inch hose that has excess flow soft nose P.O.L. on both ends. It is compatible with propane tanks from 20 to 100 pounds. DESIGN Connects two 1lb tanks to propane device Draws from both tanks evenly Creates longer run time and higher tank yield for propane devices The kit includes a two-tank manifold and dual tank foot