The 40 foot grounded electrical extension cords are sold by the case. They are rated to handle up to 13 amps, up to 1625 watts and is UL approved for 125 volts AC. These heavy duty dark green Westinghouse vinyl cords are made of single plug and can be used for both indoor and outdoor use with sturdy PVC connectors. They have lead free nickel-plated plug blades for a longer life and better electrical contact. The single outlet comes complete with instructions for the proper use.