2 ounce syringe of Tribolube - 71. Oxygen compatible, oxygen safe, synthetic lubricant for all your cylinder and valve needs. Approved for use in all cylinders including Composite. This lubricant is approved by all valve manufacturere for proper lubrication; SCUBA, Fire and Paintball. Tribolube - 71 is specically designed for open and closed circuits as well as any high pressure gas delivery system. Helps prevent seizing of dis-similar metals. Syringe makes for easy use and storage.