The Forney 57601 Crowfoot Electrical Plug is heavy duty vinyl crowfoot-design electrical plug with three heavy duty brass blades. Has an extra blade to convert to 30-Amp plug. Forney Industries is one of America's longest operating family-owned metal working product companies. Founded in 1932, Forney offers more than 5,000 products for the hardware, automotive, farm and ranch and do-it-yourself markets. If you've got metal working questions, we've got answers. We're committed to your success regardless of location size or needs. 30/50-Amp, 125/250-Volt capacity. NEMA 10-50, 10-30. Proof of purchase required.