Lincoln K and KP Numbers › Lincoln Electric K3135-1 MAGNUM PRO 550 DUAL PROCEDURE, 10' Lincoln Electric K3135-1 MAGNUM PRO 550 DUAL PROCEDURE, 10' Sale Price: $1,107.91 Original Price: $1,240.86 MAGNUM PRO 550 DUAL PROCEDURE, 10' PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! MAGNUM PRO 550 DUAL PROCEDURE, 10' PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000