Features: Imported high-brightness fluorescent ink, conventionally available in 8 colors. Non-toxic, odourless, high brightness,easy to wipe. Due to its safety, bright color ,it is suitable for the popular blackboard, stickers, whiteboards, blackboards, and children's drawing boards,graffiti, etc. Use with LED fluorescent plate make your POP text, images and other advertising content more attractive. Lightweight and small enough to take with you on-the-go. Specification: Weight:110 g/3.9 oz Material:plastic Pen tip:1 mm/0.04 in Color:Red, yellow, orange, pink, blue, green, purple, white Package List: 8* Pen Writing Method: Vertically shake the pen to mix the ink inside the pen evenly. Squeeze down the tip for a few seconds until the ink flows to the tip of the pen. In the writing process, preferably under luminescent conditions, involves p utting on gloves or taking care not to touch the hands . To the panel, avoid oil and sweat stains on the hands stick to the panel, leaving fingerprints to affect the effect, writing at a even speed. Wiping method: Small-area modifications, such as wiping off one of the words, can be done by drying or wiping with a paper towel. It is easier to wipe when dry. For large swabs, wipe the panel with a cloth dipped in a small amount of water, then wipe it over with a dry cloth. The panel is regularly wiped clean.It can't be wiped clean once, it can be repeated many times.