STARELO Locking Plug for Generator NEMA L6-30P Extension Cord End Male Plug 30A 250V 2 Pole 3 Wire Grounding Electrical Replacement Plug Industrial Grade UL Listed (NEMA L6-30P) - Amazon.com
Hubbell HBL2421 Locking Plug, 20 amp, 3 Phase, 250V, L15-20P, Black and White: Amazon.com: Tools & Home Improvement