Prime Marine Adapter, 15-Amp Plug and 30-Amp Twist-To-Lock Connector, Yellow: * Enables a connection between a boat with a 30-Amp power inlet on a boat and a 15-Amp power source * Features heavy-duty marine-grade Twist-to-Lock plug and connector with water-proof seal * Cord is flexible in temperatures from -40 degrees Fahrenheit up to 140 degrees Fahrenheit * Heavy-duty, super abrasion resistant, flame retardant and water resistant cable * Over-sized strain reliefs prevent the plug and connector from separating from the wire * Nickel-coated brass blades resist corrosion