parkworld 125-Volt 20 Amp 2 ft. 12/3 SJTW NEMA 5-20 Extension Cord Adapter NEMA 5-20P to 5-15R (T-Blade 5-20R) 62183A - The Home Depot
12/3 Gauge, 3 ft, STW POWER BLOCK, 125V, 20 AMP w/ Lighted Ends Contra
20 ft. 30A 125/250V Flat Generator Extension Cord - Champion Power Equipment
Amazon.com: 1-Foot 12 AWG 15 Amp Household Plug to 20 Amp Adapter Cable,Nema 5-15P to 5-15R/20R,5-15P to 6-15R/20R T-Blade 20-Amp to 15-Amp Extension Cord Heavy Duty 15A 125V to 20A 250V AC