The ColorIt 48 Gel Pen Ink Refills are designed specifically for use with glitter, metallic, and neon gel pens. Each refill is color-coded for easy identification, making it simple to find the perfect hue for your project. With the trusted ColorIt brand behind them, these ink refills are sure to provide high-quality results and long-lasting color for all your writing and crafting needs. Ideal for collectors and pen enthusiasts, these refills offer a wide range of vibrant and eye-catching colors to enhance your creativity.