👉 Bullet fluid, also known as bullet ink or bullet marker fluid, is a specialized liquid used in writing instruments like ballpoint pens and markers. It serves as the carrier for the ink, providing a smooth and consistent flow that ensures clear, precise writing. Unlike traditional ink, which can be prone to smudging or drying out, bullet fluid is designed to maintain its viscosity and flow rate over a wide range of temperatures and humidity levels, resulting in stable and reliable performance. This fluid is particularly useful for applications requiring high precision, such as technical drawing, fine writing, and graphic design, where the quality and consistency of the ink are paramount.