Kitchen gadgets: Get an open-handed jar opener. Great for: Aiding those with arthritis, carpal tunnel, or to simply improve everyday life. Suitable for: Most sizes - from fingernail polish to a 6" jar. Mounts: The jar opener mounts to the underside of a counter or shelf to provide a simple way to open jar lids of different sizes effortlessly. Dimensions: 6" x 0.75" x 5". Open-Handed Jar Opener | Living Social