Call them “tube readers” or “pen readers” our MicroSpecs are fashionable and durable. Safely in their protective case they are sure to provide you the convenience of having your readers with you at all times. This 24-piece counter unit is the perfect add-on to our core program. At a MSRP of $9.99 they are priced to move. Available strengths: +1.25, +1.75, +2.25, +2.75