Conntek 14455 25-Foot RV Power Cord RV 50 Amp Male Plug To 50 Amp 125/250 Volt Locking Female Connector
25FT STW 6/3+8/1 50A 125/250V RV Camp Power Supply Cord NEMA 14-50P RV 50A Plug to NEMA SS2-50R 50A 125/250V Locking female 3 Pole 4 Wire Grounding, 50A 125/250V,  Approval: Plug, STW: UL, C-UL Limited five year warranty