Sharpness: The cannula is equipped with a sharp needle tip to easily enter the skin and provide venous access. This provides minimal discomfort and pain sensation during the injection. Safety: Some Unimaster Cannulas may have safety mechanisms. These mechanisms ensure the needle is closed and disposed of safely, thus reducing the risk of injury. Comfort Injection: The Unimaster Cannula is designed to increase user comfort. I Color Coding: Cannulas, their size and intended use The Unimaster Cannula is an injection tool used by healthcare providers and is commonly used in medical procedures. Precautions such as correct use and disinfection of the cannula are important to reduce the risk of infection.