Features: Mess Free: Being made of quality nylon hair, brush tip stay intact and does not spray, spread, or smear while using this aqua brush pen. Easy to Use & Clean: To use this watercolor painting pen, simply to squeeze barrel to control the ink or water flow, and clean with water under tap after using this water color painting brushes. A Variety of Nib: 3 different nib types available, including 3 different sized tip nib. Use the fine nib water brush ink pen for tiny detail & the large nib for broad strokes. Multiple Purpose: Can be used for solid colors or powdered pigment, coloring, and use with watercolor crayons, marker, and pencils to spread and smooth colors. Best Experiences: Experiencing smooth and continuous writing with our self-filling water brush pens; White/blue barrel and tip; Small/medium/large size. Specifications: Material: Plastic Color: As The Picture Shows Package Weight: approx.12g Size Options: S/M/L Length: approx.143mm/5.63in (More Size Detail, Please See Photo.) Package Includes: 1Pc Water Color Brush Pen note: Please allow 1-3mm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!