Lincoln Electric 9SM17789-28 M17789-28 ENCODER, OPTICAL, 2-BIT, 24 POS, PB Sale Price: $87.64 Original Price: $100.79 ENCODER, OPTICAL, 2-BIT, 24 POS, PB PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Quantity: Add To Cart Added! ENCODER, OPTICAL, 2-BIT, 24 POS, PB PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1