Lincoln Electric - KH503 - Welding Plug Tweet Description 50-amp, 230-volt NEMA 6.50P (pin-type) male plugMeets all UL 498 requirementsFurnished with blades for 30 and 59 amp configurations Details Category: Welding & Soldering Model Id: KH503 Product Brand: Lincoln Electric Subcategory: Welding Supplies & Accessories