Lincoln Electric 9SS21400-42 S21400-42 RATING PLATE (ALT FREQ 3) Sale Price: $40.57 Original Price: $46.65 RATING PLATE (ALT FREQ 3) PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Quantity: Add To Cart Added! RATING PLATE (ALT FREQ 3) PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1