This bistro chalk marker features point tip of 6-mm which can use on chalkboards, light boards, windows and windshields. A wonderful way to create chalkboard art to attract attention and increase sales. These chalk marker is opaque, water based, pigmented and erasable with a damp cloth. Basic chalk marker set comes with 4-piece. This set includes black, red, blue and white basic color markers and comes in carded packing. Measures 1-inch length by 3-3/4-inch width by 7-inch height.