Klick Buy Magic Pens & Refills for Magic Practice Copybook, Drawing Pen of Invisible Ink Refill  (Pack of 3, Ink Color - Black)

Note: As the ink is specially processed, the handwriting will disappear after writing. Please do not use it for daily writing, record important information and sign documents, so as to avoid unnecessary losses to you. You can use ink for SANK MAGIC BOOK. If you have SANK MAGIC BOOK then you can buy Refills set. The pen with special ink will gradually fade within 30 minutes after writing, specially designed for Reusable Sank Magic Practice Copybook. If you use a normal pen, you cannot reuse this copybook. Total 3 Packs and 1 Pack include 10 Refill, 1 Pen and 1 Grip.