The whole body is made up of the glass. It looks wonderful and easy to carry. Perfect for tersting various ink colors or writing short essays,or signature or on your office desk or calligraphy or practising hand writing. 100% Brand New and High Quality Type: Fountain Pen Material: Glass Size: about 17.8cm Color: 9 Colors for you choose Write Point: 0.7mm Weight: 18.3g Use:calligraphy/signature/hand writing/painting Package Include:1 x Glass Dip Pen(Not Included Ink) Instructions: 1. Fully infiltrate the ink below the ball. 2. Tilt the pen tip upside down to make the ink turn evenly, avoiding too much ink in the first word. 3. Start writing and drawing. When the ink is insufficient, you can turn the tip first. 4. Gently stir in water to completely clean. Note: 1.Due to the light and monitors effect, colors may have lightly difference. 2.Please allow 0.5-1cm size errors due to manual measurement. Thank you for your understand! 3.1cm=0.39'',1mm=0.039''.