Ideal for people suffering from arthritis, grasp limitations or writer s cramp. Provides a comfortable, built-up, non-slip grip for increased control of pens, pencils and other utensils. Gripper automatically conforms to the shape of the item round, square, etc. The regular size gripper fits pens and pencils; the assorted size grippers have hole diameters ranging from 1/8 to 3/8 (.31 to .95cm) to fit eating utensils, artist s brushes, crochet hooks and other items. Assorted colors.