Twist Lock, Natural, 1-9/16" Max - 50/bag – Fosco Connect
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Southwire 50 ft. 6/3 and 8/1 SEOW 50-Amp (California Standard) Power Distribution Heavy-Duty Twist-Lock Generator Extension Cord 19380008 - The Home Depot
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14/3 extension cord with twist lock plug 50 foot 163-0117 – Ships Fast from Our Huge Inventory | USA-CLEAN