EV1050MS-018 This EVSE charging adapter is made of a very durable construction. It is a NEMA 10-50P to NEMA 14-50R. NEMA 10-50P, 50 Amp, 125/250 Volt Dryer or Welder PlugNEMA 14-50R Tesla EV WiringNEMA 10-50P to NEMA 14-50R (Tesla) Key Features Heavy Duty SRDT, 300 Volt, 6/2+8/1, with an anti-cold weather jacket. Works at Home Fits a 50 Amp, NEMA 10-50R outlet, which is recognized as the old style for cooking ranges and welders. Nickel-Plated Pins and terminals are nickel-plated to prevent rusting. EV Connector (NEMA 14-50R) Using the 4-prong plug that comes with your EV, plug into the corresponding connector in the adapter. Old Style Range or Welder Outlet (NEMA 10-50R) And then simply plug the EV adapter into your 3-prong old style range or welder outlet! EV1050MS-018 Part Number EV1050MS-018 Male Plug Configuration NEMA 10-50P Female Connector Configuration NEMA 14-50R Amperage 50 Amps Voltage 250 Volts Maximum Operating Wattage 12,500 Watts Cable Jacket SRDT, 300 Volt, PVC Wire Gauge 6/2+8/1 Special Features Nickel-Plated Pins & Terminals, Wired Specifically for Tesla