Lincoln K and KP Numbers › Lincoln Electric K4879-2-10-564 MAGNUM� PRO 500WC BARREL, 15 FT. Lincoln Electric K4879-2-10-564 MAGNUM� PRO 500WC BARREL, 15 FT. Sale Price: $2,510.70 Original Price: $2,811.98 MAGNUM� PRO 500WC BARREL, 15 FT. PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! MAGNUM� PRO 500WC BARREL, 15 FT. PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000