• Set of 4 liquid chalk markers in blue, green, red, and yellow colors. • Chisel tip with a stroke width of 2 to 6 mm for precise results. • Suitable for non-porous surfaces such as chalkboards, glass, mirrors, metal, and plastic. • Odorless and non-toxic ink, easy to erase with a damp cloth. • Resistant to light rain once the stroke is dry outdoors. • Instructions: shake before use and press the tip to release the ink.