Premium Materials: These replaceable-tip mechanical pencils are made from durable and wear-resistant POM material, offering high precision, a smooth surface, a comfortable feel, and a rich selection of colors. High-Precision Writing: Thanks to the premium materials and exquisite craftsmanship, the nibs allow for precise control and detailed drawing, making them an essential tool for creative work and note-taking. Easy Installation: Our replaceable-tip mechanical pencils install just like the original pencils, requiring no tools or glue; they can be easily unscrewed in seconds. Wide Compatibility: Our products are compatible with first and second generation mechanical pencils, providing a precise and smooth writing experience without scratching your screen. Product Details: Includes 8 replaceable-tip mechanical pencils: one each in black, white, purple, yellow, pink, blue, red, and cyan.