Keep written works clean by using these rolling ball stick pens with smear-free, waterproof ink. With ribbed grips and 0.5mm needle-point tips, these pens provide increased comfort and precision while writing essays, drawing sketches and working on other projects. These Pilot Precise P-500 extra-fine-point black gel-ink pens feature distinctive two-tone, marbleized barrels for a sleek and professional appearance.