Best quality for your paper. Organize your office more consumption-conscious with the Uni-Ball replacement cartridge. This practical assistant keeps your roller reliably operational and is easy to replace. Its composition allows it to work efficiently, preventing unnecessary interruptions from constant replacements. It's best to always have a small supply on hand. This product writes with gel, utilizing a viscous consistency that dries much faster than regular ink. With a ballpoint tip, this product becomes a true classic, durable and suitable for extensive writing. This item features a blue color. A depleted roller can quickly become a nuisance at crucial moments. Therefore, always keep enough replacement cartridges in stock.