Features: Especially suitable for being used for practicing calligraphy on water-writing cloth which is reusable after the water is dry. And they can also can be used as general calligraphy brush pens for writing, drawing and painting, which are rather practical. Made of high quality materials, superior in quality; if carefully maintained, they can have longer service time. The hair materials for making the brush head vary in hardness: white one is softer, brown one harder. The piston design is for filling water / ink; can save time of repeated dipping while you are practicing. There are six piece of water brush pens, varying in types and sizes, which can meet your various writing needs. Specification: Condition: 100% Brand New Item Type: Water Brush Pen Pen Handle Material: Organic plastic Brush Head Material: Nylon Water / Ink Supply Type: Piston Quantity: 6pcs/set Types: White Brush Head + Brown Brush Head Sizes: L + M + S Brush Pen Handle Length: 18cm / 7.09inch Package Weight: 83g Type Size Diameter Length White Brush Head L 0.9cm / 0.35inch 4.0cm / 1.57inch M 0.8cm / 0.31inch 3.2cm / 1.26inch S 0.7cm / 0.28inch 2.5cm / 0.98inch Brown Brush Head L 0.8cm / 0.31inch 3.6cm / 1.42inch M 0.7 cm / 0.28inch 3.0cm / 1.81inch S 0.6cm / 0.24inch 2.3cm / 0.91inch Package Included: 1 x Set of 6Pcs Water Brush Pens Note: Before placing an order, please notice that the item color displayed in the pictures may be slightly different from the real object, due to different monitors or other factors. And please allow 1-3mm error due to manual measurement. Thanks for your understanding. .