Lincoln K and KP Numbers › Lincoln Electric KP4747-ST 9/20 STANDARD INSULATOR Lincoln Electric KP4747-ST 9/20 STANDARD INSULATOR Sale Price: $18.95 Original Price: $21.22 9/20 STANDARD INSULATOR PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 2.000 Add To Cart Added! 9/20 STANDARD INSULATOR PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 2.000