Quality constructed 4 foot grounded, heavy gauge, extension cords. I've used them with everything from heavy load draining, 15amp , in home electric heaters to equally rated high amperage (again 15 amps--no higher, though it is such heavily made wiring, that you might get away with 20 amp loads for short periods of time) current draw.I highly recommend and I'm a recently retired mechanical engineer by vocation; ergo.I know excellent quality when I see and use it!Hope this review was HELPFUL.!
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