The Magic Twist provides easy assistance when opening and closing bottles and jars. Its “V” shape allows the opening of jars or bottles with a diameter as small as ½” (1.3cm) up to 4-3/4” (12cm). This device as no sharp edge and will not puncture lids. It installs easily under any kitchen cabinet – no tools required. A great device for individuals with pain or physical disability. Measures 5.5” (14cm) at widest; 8.25” (21cm) long.