Specifications: 0.5mm gel pen refills, with 4.0 brass head and thickened tube. Inks flow smoothly out of pens with no skipping. Smooth pen refills, perfect for taking notes, drawing and so on. Practicability and its ultra quality, these pens write beautifully with smooth, consistent ink flow. Type: Gel Pen Refill Pen Point: 0.5mm Material: Plastic Quantity: 10 Pcs Features: Smooth Writing, Stationary, Smooth Flow, Quick Dry Length: 12.5cm/4.92" (Approx.) Notes: Refills only, other accessories(for instant, pen barrel) are not included. Due to differences in lighting and screen settings, the color of the project may be slightly different from the picture. Due to different manual measurements, allow for slight size differences. Package Includes: 1 Set of Gel Pen Refills(Others are not included.)