American Educational Unmounted Double Convex Lenses with Ground Edges, 38mm Diameter, 15cm Focal Length (Bundle of 10)

The lenses were fine;however, they were not the ones we were looking for. We ordered them for a third grade science experiment from the description in the text book. The lenses we received matched the description, but we couldn't use them for that particular experiment. The teacher found another use for them, so we are keeping them.