Yellow Locking Cord Adapter, 12/3 STW, 15A-125V To 20A-125V, 9 In. | True Value
Larson Electronics - Explosion Proof Fixture/Extension Cord Plug - 20 Amp Rated - 2ft Pigtail - Hot Work Permit
Iron Box NEMA 25ft 5-20 Extension Power Cord - Durable and Reliable 20A, 125V, UL Listed Portable Generator Cord for Transfer Switches, Data Centers, and Other High-Powered Applications (Black) - Electronics Power
NEMA 5-20 Extension Cord - Multiple Lengths – SIGNAL+POWER
15A Male Twist-To-Lock Plug to 20A Female Converter Adapter - JC Smith Inc
Coleman Cable 90208802 Generator Cord Adapter From 5-15P to L5-20R (9 in, 12/3 gauge), Yellow - Walmart.com