Can you write? Cant write? A dry erase marker with a broad lead green refill ink.
The newly developed ink makes it easy to write and erase without any residue until the end.
Easily refillable cartridge makes it a great way to save money.

From the Manufacturer

Knowing Sensor Broad Point Lead Dedicated Cartridge, Green

The ink level is visible, so you can see the finish of using this "Know Sensor".The ink is easy to write and erase, without any residue until the end.Easy to refillable cartridges.Ink Color: Green