The Twister Jar Opener is a jar opener designed for use by individuals with grasping, fine motor, or upper extremity disabilities. Made of chromed steel, the opener clamps to the jar lid and opens the jar with a twist of the wooden handle. DIMENSIONS (LxW): 3.5 x 1 5/8 inches. The device opens jars from 0.5 to 4.5 inches in diameter. WEIGHT: 3.2 ounces.