Lincoln K and KP Numbers › Lincoln Electric K2951-2-3-45 MAGNUM PRO CURVE 300, 15 FT. Lincoln Electric K2951-2-3-45 MAGNUM PRO CURVE 300, 15 FT. Sale Price: $683.35 Original Price: $765.35 MAGNUM PRO CURVE 300, 15 FT. PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! MAGNUM PRO CURVE 300, 15 FT. PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000