BIC Intensity Permanent Markers bring bold, colorful flair to your creations. With a unique Snap Cap feature, the hassle of marker dry-out stops here! Each marker features an ultra fine point for sharp, crisp lines and a comfortable, non-slip grip for enhanced control. The low-odor, acid-free ink (no added acid, no measurable pH) marks on almost any surfacefrom glass and metal to photos and foilsmaking these vibrant, non-toxic markers a great choice for home, school, or the office.