Carbonflex Electrodes Insulated 3 x5 Red Shampoo Showers Bathtubs For use with Optiflex 3 Otoscope Accessory For use with Optiflex 3 Designed to alleviate the pain of writing associated with arthritis and other hand afflictions * Comfortably and correctly positions the thumb to reduce stress placed on the wrist * Can be used with most standard pens and pencils * Pen included blue ink * For right or left hand use * 3 x 5 Red * Thermally cured carbonized rubber with permanently bonded multi colored insulation offers unique combination of features and capabilities at very low cost * Uniform conductivity conserves energy and improves performance of equipment *