Use Sharpie Retractable Marker for easy, one-handed operation. No cap to remove or lose. The Safety Seal valve design provides a superior seal, preventing the marker from leaking and drying out. This set includes both fine tips and ultra-fine tips. Durable fine-point tip produces thinner, detailed lines. Extra-precise narrowed tip allows extreme control and accuracy. Quick-drying ink is fade-resistant and water-resistant. Certified AP nontoxic, permanent ink marks on most hard-to-mark surfaces.