Lincoln K and KP Numbers › Lincoln Electric KP2773-1 INSULATOR 550 Lincoln Electric KP2773-1 INSULATOR 550 Sale Price: $12.04 Original Price: $13.49 INSULATOR 550 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! INSULATOR 550 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000