Large Brass Y Male to Female POL Tee Connector for Propane Gas 

1 x MALE POL TO 2 x FEMALE POL

 EXTENDED BRASS PIG TAIL Y ADAPTOR

 WILL LET YOU RUN 2 REGULATORS FROM 1 CYLINDER

OR CONNECTS 2 CYLINDERS TO 1 REGULATOR WHEN USED IN CONJUNCTION WITH A PIG TAIL HOSE