Lincoln Electric 9SS21400-40 S21400-40 RATING PLATE (ALT FREQ 1) Sale Price: $40.57 Original Price: $46.65 RATING PLATE (ALT FREQ 1) PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Quantity: Add To Cart Added! RATING PLATE (ALT FREQ 1) PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1