Features: Gel Pen Refills: 0.5mm fine point. Re-use your favorite gel pens with this refill. Whether you are at school, work, or in office, you will alway have your writing tools ready to use. More Durable and Smooth: Get precise, clean lines of rich, and full inks on every page. This refill of gel pens has inks that flows free and writes more smoothly than traditional pens. Quick Drying & Will Not Smear: High grade gel-based inks with the best permanences of oil-based gel inks pens dries quickly and will not smudge or blot. No more smeared lines! Fit Various Writing Occasions: Standard gel inks pen refill is very suitable for office, business, school and also home, etc.; Small and portable, very convenient to carry with yourself. No Fadding or Skipping: Enjoyable writing experience with ergonomic and technical designs. Its good for writing, drawing, drafting, signature, calligraphy, sketching, and painting tools. Specifications: Material: Plastic Inks Color: Balck Package Weight: approx.12g Size: As The Picture Shows Package Includes: 1Pc x Gel Pen Refill note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!