● Specifications: paper-thin ink pens write once push, you can restore the dark (several times, make them vivid. Does not Tip when you push the back to the system, so does not damage to the nibs. Remaining ink pens but with a display window that you can check. ◆ Material: Cap, front axle: Play PP tip: Polyester fiber shank: PP knock part: Play POM ◆ ◆ ◆ writing line width: 1.6 mm cap safety: ISO Standard fitment Ink Pens ingredients: Alcohol Series oil-based pigment