Upgrade your research regimen with the blue Reusable Peptide Pen V2—a sleek, robust, and user-friendly metal injection pen. Designed for precision and comfort, it streamlines research and reduces reliance on traditional syringes. Needle-Hidden Design: The V2 model features a mechanism that cleverly conceals the needle during injection—a great benefit for researchers who prefer discretion and reduced needle visibility Smooth Dosing Mechanism: Compared to earlier versions, the V2 offers a smoother push with minimal clicking, enhancing control and comfort Standard 3 ml Cartridge Compatibility: Easily works with universal peptide/insulin cartridges up to ~60 IU. Durable Build: Crafted from sturdy metal, this pen balances lightweight portability with long-term reliability. Package includes one pen. Check our other listings for extra cartridges! ⚠️ For Research Use Only – Not for human or veterinary use.