NEMA 6-20R to 14-50P Adapter (220V-240V) - 20" Long Cord, Designed for ev Charging, Allows Your 6-20 plugged 16 amp Charger to use a 14-50 50 amp Outlet. Heavy Duty and Durable
2PCS* 50 Amp 220 Volt 3 Prong Plug Fit Electrical RV Welder 10-50P 125-250V | eBay
ELEGRP 50 Amps 250V Flush Mounting Power Outlet, NEMA 6-50R Receptacle, Straight Blade Welder Outlet, Heavy Duty, Grounding, 2 Pole 3 Wire, UL Listed, 1 Pack - Amazon.com
Parkworld 64873 NEMA 14-50P to 5-20R (T-Balde 5-15R) Adapter Cord with
Eaton Wiring 50A Power Receptacle w/ Short Strap, 2-Pole, 3-Wire, 250V, White (Eaton Wiring AH1254BK-SHST) | HomElectrical.com
220 Volt 50 Amp Plug - Plasma Cutters, TIG, MIG and Stick Welders by Equipment Innovations