NEMA 5-20 Extension Cord - 20A/125V 12 AWG - Iron Box # IBX-1010 | eBay
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
L5-20P to 5-15R/20R Heavy Duty Power Adapter, 20A, 125V, 6 in. | Eaton
6 Foot 5-20 12 Awg, 20A, 125V Power Extension Cable