Chisel tip markers allow you to create lines in various widths with a resilient tip that won't fray with useWrite smoothly on practically any surface including paper, cardboard, metal, PVC piping, concrete walls, plastic containers and ceramic tilesAvery permanent markers won't become dried out for up to half an hour without a capSuitable for classrooms: These low-odor markers provide vivid color and comfortable use in any shared environment like schools, study areas, and office meeting roomsWear and water resistant ink sets in quickly and makes these the best markers for writing on boxes, marking sports gear, labeling plastic containers and morePermanent ink is water-resistant to maintain its bold look