Conntek 14340 RV Pigtail Adapter RV 30 Amp Male Plug To 15/20 Amp U.S Female Connector
RV Camp Power Pigtail Adapter Cord, 30A 125V  RV Plug to 15/20A 125V Connector, Clear NEMA TT-30P to NEMA 5-15/20R Cable: 1.5FT STW 10/3 Approval: Plug, Connector, and STW: UL, C-UL