Lincoln Service Parts 2 › Lincoln Electric 9ST13639-2 KNOB [2] T13639-2 Lincoln Electric 9ST13639-2 KNOB [2] T13639-2 Sale Price: $16.85 Original Price: $19.38 KNOB [2] PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 2 Add To Cart Added! KNOB [2] PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 2