Revolution Counter Drive Pin 'O' Ring, for use on BSA models: A50 & A65.O.E.M: 68-0588 / 71-4443 / E4443.Supplied: SinglesA50 & A65 'O' Ring Revolution Counter Drive Pin: 68-0588 / 71-4443 / E4443. C3SKU: 68-0588 / 71-4443 / E4443.£0.49PriceQuantity*Add to Cart