【3 in 1 Nib】Perfect 10mm jumbo car wndow markers, set of 8 colors liquid chalk markers - The Rectangular Tip enables you to use the window paint markers as 3 Tips - Wide Lines, bold lines & thin fine lines. | 【Safe & Non-toxic】 Dustless, non-toxic, odorless and washable marker formula is eco-friendly and safe for use. Ideal for teachers, students, artists, business, office, and restaurant owners or at home as the perfect marker for kids. | 【Comes Off Easily】 Our jumbo liquid chalk markers can be erased easily by wiping the area with a damp cloth or paper towel.(ERASABLE ON NON-POROUS SURFACE ONLY!) | 【Widely Used】 A great choice for restaurant menu boards, bistro boards, white boards, LED writing boards, house windows & mirror markers, car windows, glossy boards, glass products, plastic products, Metal products, kids' art, school work, marking dates on food Containers, ceramic mugs, blackboard contact paper, blackboard labels, thank-you stickers, wall decals and so on. How it would be used depends on your need! | 【Please Note】 Our erasable chalk pens work perfectly with bright colors and vivid colors on ALL non-porous surfaces. it's recommended to try them first on small areas and always follow the cleaning instructions provided.NOT ALL CHALKBOARDS ARE SUITABLE FOR THE USE OF CHALK MARKERS. PLEASE TRY THE MARKERS ON SMALL AREAS FIRST TO AVOID RUINING YOUR BOARD.