The black plastic part threads onto the QCC1/Type1 propane tank and the two brass threaded "Y" fittings thread connect your adapter hose fittings onto your two devices.
solid brass, great hardness; corrosion resistance, easy and quick to install.
Propane Y-Splitter Tee Adapter Connector for BBQ grill, Heater, Stove, Propane appliances.
Provides secure and airtight connection between propane tank and gas grill.