This water brush pen tip is nice for calligraphy enthusiasts and artists alike. The replaceable sponge brush tip ensures a consistent and smooth application, while the ergonomic design offers comfort during extended use. Suitable for both indoor and outdoor settings, it meets the needs of users seeking versatility and reliability. Features -Color:Multi -Material:Plastic, sponge -Size:17.50X7.00X7.00cm/6.88X2.75X2.75in -Innovative brush head: the water dipping large brush head revolutionizes calligraphy practice with its userfriendly design -Outdoor and fitness use: water brush pen tip is nice for outdoor calligraphy and fitness activities, merging artistic practice with physical exercise -Convenient replacement: the replaceable head allows for effortless changes, accommodating different calligraphy styles -Sturdy material: crafted for durability, ensuring the brush head remains intact through extensive use -Simplified water dipping: floor book pen replacement head, eliminates the traditional need for a water basin, making calligraphy practice more straightforward Package list: 1 replacement head