A pack of 30 various types tips replacement nib for paint marker., which can be filled with blank paint touch-up pen marks, with nibs at both ends. High-quality blank paint pen markers can be filled and used with most types of paint and ink materials. They are suitable for artistic acrylic, oily and water-based paints, watercolors, stains, inks, dyes, etc. Just fill the empty paint blank tube body. Leave the paint agitator ball in the body before filling. Cover the pen and shake the pen lightly, you can start writing. To activate the paint flowing through the nib, just press the nib several times.Create both a thin and thick line for detailing or broad coverage. This large thick pen is suitable for arts and crafts, painting, illustration and car paint repair. Specification: Material: Plastic Size: approx. Refill Big Head: 28x4.3x7MM/1.1x0.16x0.27inch Refill Small Head: 34.5x4x2MM/1.35x0.15x0.078inch Cotton Core: 80x10MM/3.14x0.39inch Package Includes: 30 Pieces Paint Marker Replacement Nibs Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!