Lincoln K and KP Numbers › Lincoln Electric K4879-4-10-564 MAGNUM� PRO 500WC BARREL, 25 FT. Lincoln Electric K4879-4-10-564 MAGNUM� PRO 500WC BARREL, 25 FT. Sale Price: $2,902.05 Original Price: $3,250.30 MAGNUM� PRO 500WC BARREL, 25 FT. PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! MAGNUM� PRO 500WC BARREL, 25 FT. PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000