Crafted from sponge, these pen tips are suitable for various writing tools. They are easy to install and replace, ensuring that your calligraphy pens are for use. The soft texture of the sponge tips provides a comfortable writing experience, reducing hand fatigue during long writing sessions. Features -Color: -Material:Sponge -Size:2.80X0.50X0.50cm/1.10X0.20X0.20in - sponge: these calligraphy pen components are crafted from sponge material, ensuring durability and a consistent writing experience -Simple replacement: designed for easy installation, these soft pen heads can be quickly replaced, keeping your calligraphy tools ready for use at all times -Wide application: ideal for a range of calligraphy styles and artistic projects, these sponge pen tips cater to various creative needs -Effortless writing: the soft brush tips provide a smooth and comfortable writing experience, making it easier to practice and suitable your calligraphy skills -Extended use: you can enjoy performance and always have a spare tip on hand Package list: 25 Tips