NEMA L21-20 20A 3-Phase 120/208V Industrial Rubber Extension Cord – AC Connectors
Tripp Lite Power Extension Cord, C19 to C20 - Heavy-Duty, 20A, 250V, 12 AWG, 6 ft. (1.83 m), Black - Critical Power Supplies
1-Foot Nema 5-20P Extension Cord, 12AWG Nema 5-20P to 5-20R Extension Power Cable,20Amp T Blade Male to Female Cable, Nema 5-20P to 5-15/20R Comb Adapter Cable: Amazon.co.uk: DIY & Tools
Parkworld NEMA 5-20 Extension Cord 5-20P to 5-20R (T Blade Female Also
C19 to 5 20P Heavy Duty Extension Cord, 10 ft, Black | Eaton
parkworld 25 ft. STW 12/3 20 Amp 125-Volt NEMA 5-20 Extension Cord (NEMA 5- 20P to 5-20R) 62220A - The Home Depot