The Sank Magic Practice Copybook Set Is A Practical And Reusable Handwriting Tool Designed To Help Preschoolers And Young Children Develop Their Writing And Fine Motor Skills. This Set Includes Four Tracing Books Focused On Different Aspects Of Learning, Along With Refillable Pens And Grips To Ensure Proper Hand Positioning. The Magic Ink Disappears After A While, Making The Books Reusable For Continuous Practice. Perfect For Early Learners, This Set Is An Engaging Way To Teach Numbers, Letters, And Calligraphy In A Fun And Interactive Way.Number Tracing Book: Helps Children Learn To Write Numbers Through Guided Tracing Exercises.Reusable, With Special Magic Ink That Fades After A Short Time, Allowing Children To Practice Over And Over Again.Specially Designed Pens With Magic Ink For Tracing On The Copybooks.Ergonomically Designed Grips To Help Children Hold The Pen Correctly, Improving Their Writing Posture And Comfort.The Ink Gradually Fades After Writing, Making The Pages Reusable For Continuous Practice.