Lincoln K and KP Numbers › Lincoln Electric KP3988-45 GUN TUBE 45D A/W FIXED MAGNUM PRO Lincoln Electric KP3988-45 GUN TUBE 45D A/W FIXED MAGNUM PRO Sale Price: $823.72 Original Price: $922.57 GUN TUBE 45D A/W FIXED MAGNUM PRO PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! GUN TUBE 45D A/W FIXED MAGNUM PRO PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000