??Safety & Permanent - This acrylic paint pen is filled with acrylic-based ink, made non-toxic and environmentally friendly, safe for children, dries quickly and has a glossy finish, can be used almost anywhere.??Attractive Gift - Equipped with round 0.7mm tips, these acrylic pens make it precise and easy to control, ideal for drawing semi-bold medium-heavy lines and details, best gift for kids for Christmas, Mother's Day, Birthday, Thanksgiving, Party, New Year's gift etc.??18 Colors - 18 colors acrylic pens for rocks. Vibrant colors for orange, purple, light blue, blue, red, rose red, green, light green, silver, light purple, pink, light yellow, yellow, black, brown, champagne, khaki, white, realize your DIY creativity with these colorful glass paint pens.??Wide Use - Works on virtually any surface metal, glass paint, stone, porcelain pens dishwasher safe, ceramic, crafts, rock, black paper, dark card, wood, stained glass, rock painting, DIY photo albums, plastic, glass paint and so on.?? 12 Month Warranty - we promise you a 12 month warranty on our rock painting set and a 30 day money back guarantee. Contact us if you have any questions.