Lincoln Service Parts 2 › Lincoln Electric 9ST9639-4 BOX CONNECTOR T9639-4 Lincoln Electric 9ST9639-4 BOX CONNECTOR T9639-4 Sale Price: $57.29 Original Price: $65.88 BOX CONNECTOR PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! BOX CONNECTOR PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1