Blackstone 3' Propane Tank Adapter Hose with Regulator, allows you to switch from a 1 pound propane bottle to a bulk (20 pound) propane tank. The connector is specifically designed to work with the Blackstone 17" & 22" Tabletop Griddles and the Griddle Charcoal Grill Combo. Bulk tank adapter w/ regulator (qty 1). Adapts 1 Pound Propane Griddles to Bulk (20 Pound) Propane Tanks. Extends 3 Feet