Features: 1.Can write on a variety of surfaces, such as body painting, paper, canvas, glass, ceramics, plastic, cloth, wood, metal, etc. 2.There are two steel balls on each pen to make the ink shake more evenly. 3.Quickly drying, waterproof,water-based pigment ink, odorless, environmentally friendly and non-toxic. 4.The cap is the same color as the ink, allowing you to easily pick the color you like. 5.With high adhesion,the product can leave a permanent mark on the surface of material. specification: Can write on a variety of surfaces, such as body painting, paper, canvas, glass, ceramics, plastic, cloth, wood, metal, etc. There are two steel balls on each pen to make the ink shake more evenly. Quickly drying, waterproof,water-based pigment ink, odorless, environmentally friendly and non-toxic. The cap is the same color as the ink, allowing you to easily pick the color you like. With high adhesion,the product can leave a permanent mark on the surface of material. The transparent pen enable us to clearly see the ink inside, and always know the amount of the ink. : Size:133*11 mm/5.2*0.4 in Writing line width:0.7 mm/0.03 in Weight:156 g/5.5 oz Color:gold, purple, red ,brown, orange, white,green, pink, blue, black ,silver ,yellow Package List: 12*Marker Pen Usage method:shake the pen tip up before use to make the ink color evenly.Then gently press the tip several times until the ink flows to the tip of the pen to create unlimited creations to your liking.Cover the cap immediately after use, and store it in a horizontal position.