Lincoln Service Parts 2 › Lincoln Electric 9ST10642-421 FLEX TUBE T10642-421 Lincoln Electric 9ST10642-421 FLEX TUBE T10642-421 Sale Price: $37.45 Original Price: $43.07 FLEX TUBE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! FLEX TUBE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1