Marquee - Research Pen Metal 80 Unit (V1) Pen-Depot by ENDURAPEP Key Features: Precision-Controlled Delivery: Fine-tune each injection with an adjustable dial for 1 to 80 units per release, allowing consistent and controlled administration. Reusable Metal Construction: Built for long-term use with high-quality metal components that resist wear and provide a professional-grade feel. Universal Cartridge Compatibility: Fits most standard 3 mL cartridges designed for reconstituted research compounds. Cartridges not included. Sealed System Integrity: Designed to support compound protection by reducing air exposure and minimizing contamination during research use. Simplified Compound Tracking: Supports easy logging of delivery units and volumes during ongoing compound trials or rotation schedules. Note: THIS IS NOT A WRITING INSTRUMENT THIS IS NOT A MEDICAL DEVICE. Use only in accordance with applicable research guidelines. NO INSTRUCTIONS PROVIDED - Because this product is designed for Research Use Only (RUO) and the use for these items widely varies, we do not provide instructions. It assumes the buyer has the necessary knowledge of correct handling, setup, loading and reloading along with an understanding of necessary accessories.