This ground writing brush tip is nice for large-scale calligraphy and painting projects. The water-absorbing sponge tip provides smooth and consistent application, ideal for creating bold and expressive strokes. It ensure comfort and longevity, catering to the needs of both beginners and experienced users. Features -Color:Multi -Material:Plastic, sponge -Size:17.50X7.00X7.00cm/6.88X2.75X2.75in -Innovative calligraphy tool: the water dipping large brush head offers a modern solution for efficient calligraphy practice -Versatile outdoor use: water brush pen head is suitable for outdoor writing and fitness, allowing for a unique combination of activities -Quick and easy replacement: the replaceable head ensures easy changes to meet various calligraphy needs -Sturdy and reliable: designed for long term use, ensuring the brush head withstands frequent use -Simplified practice: water brush pen replacement head removes the need for a water basin, making the process of dipping the brush in water more convenient Package list: 1 x brush replacement head