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parkworld 1 ft. 10/3 3-Wire 110/125-Volt To 220/250-Volt Power Converter 2x NEMA 5-15P to 14-50R V-Adapter Cord 61544 - The Home Depot
AC WORKS 10 ft. STW 8/3 3-Prong NEMA 6-50 Welder Extension Cord WD650PR-10D - The Home Depot
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Champion Power Equipment 25-Foot 30-Amp 125-Volt Fan-Style Generator Extension Cord (L5-30P to three 5-15R) 48034 - The Home Depot
Parkworld 69625A UL Listed Dryer 3 Prong Extension Cord, NEMA 10-30 Ex
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10ft STW 30A 250V NEMA 10-30 3-Prong Flexible Dryer Extension Cord by AC WORKS® | eBay