NEMA L6-30P Twist Lock Electrical Plug 30 Amp 250 Volt 2 Pole 3 Wire 2P 3W Industrial Grade Locking Male Plug Connector Adapter Grounding for Generator, Transfer Switches RV Trailer, UL Listed - Walmart.com
AC WORKS V-Duo Adapter L14-30P 30 Amp 4-Prong Locking Plug to (2) 15 Amp/20 Amp Household Outlets ADVL1430520 - The Home Depot
STARELO 2PCS Locking Plug for Generator NEMA L14-30P Extension Cord En
Iron Forge Cable 30 Amp Male to 30 Amp Female RV Electrical Adapter Po - iron forge tools
AC WORKS® NEMA L14-30P 30A Locking Plug to RV/ EV /Range NEMA 14-50R – AC Connectors
AC WORKS 1.5ft NEMA L14-30P to NEMA 6-50R 30-Amp 4-wire To 3-wire Grounding Single To Single Orange Basic Flexible Adapter in the Adapters & Splitters department at Lowes.com