Bút bi tàng hình mực xanh dương 13cm kèm phụ kiện chuyên dụng

Specifications: The words that wrote down by this pen will disappear thoroughly within hours. Looks just like normal pen, but a great tool for magic trick. Make fun to your friend with this pen and good gift for your friends. Widely used in file security, magic show and other security field. Item Name: Magic Ballpoint Pen Set Ink Color: Blue Shell Material: Plastic Features: Smooth Writing, Disappear Ink, Magic Tool Length: 13cm/5.12" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Ballpoint Pen 5 x Refills 1 x Pen Holder #BallpointPen #Disappear #Disappearpen #Ink #Magic #Magictool #OfficeSupplies #Pen #Refill #Writing