Helps Hands And Improves Handwriting The Pencil Grip was designed by a doctor and is widely used in classrooms, at home, and in therapeutic settings. The unique shape is designed to be “one size fits all” to help the hands of kids and adults, and work for both righties and lefties. The Pencil Grip can be used as a training tool, and then permanently for added comfort. The Pencil Grip fits on pencils, primary pencils, pens, crayons, markers, paint brushes, etc., so its benefits can be widely enjoyed.