· 【Sufficient Black Markers】Colpart permanent markers set includes 85 markers for marking,writing,doodling and all with black ink,huge quantity can meet your needs for replacement and keep you using for a long time in daily life.· 【Chisel Tip Black Markers】Our marker pens adopt a chisel tip, which can mark key knowledge points with clear lines, nice for writing, doodling, graffiti,and drawing, circle your meeting time on the schedule.· 【Premium Permanent Markers】Come with long-lasting vivid,quick-drying ink,our permanent markers is waterproof,smear proof and fade-resistant,non-toxic&acid-free.Suitable for kids and adults(Tips:Suitable for Children 3 years and Above)· 【Multi Use Marker Pens】These fine tip permanent marker sets have a wide range of applications,it can be applied on paper, plastic, cardboard, metal and more, for lining, marking, coloring, scrapbooking and writing,ideal for the classroom home or office use.· 【100% Satisfaction Guarantee】If you have any questions or problems about the black permanent markers,you can feel free to contact us at any time,we can give you satisfactory solution within 24 hours.