Lincoln K and KP Numbers › Lincoln Electric KP504 HOOKUP KIT FOR LW-18,20 Lincoln Electric KP504 HOOKUP KIT FOR LW-18,20 Sale Price: $294.59 Original Price: $329.94 HOOKUP KIT FOR LW-18,20 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! HOOKUP KIT FOR LW-18,20 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000