Automatically Blue Groove Copybook Magic Pen Kit Invisible Ink Automatic Fade Pen Disappearing Refill

Name: Automatic fade pen

Length: 14cm

Line width: 0.5mm

Refill color: blue

Package: 1Set

Feature:

1. This product is suitable for students to copy workbook copybooks, do exercises, children's drawing, handwriting will disappear in about 20-30 minutes, disappear without leaving traces, does not affect rewriting, does not affect repeated use of the writing board

2. The fade rate is related to weather temperature and humidity.

The ink refill is environmentally friendly, safe, non-toxic and non-polluting. You can slide the new refill back and forth on the eraser before use.

Note:

1. There is 2-3% difference according to manual measurement. Please check the size carefully before you buy the item.

2. Please note that slight color difference should be acceptable due to the light and screen.

3.if there are something wrong with the quality, quantity and the type of the product, please fell free to contract our customer service.