RWS Spring Cylinder Oil is a quality airgun lubricant that contains rust preventatives. RWS Spring Cylinder Oil is recommended for use on your air rifle's mainspring, barrel pivot pin, and cocking lever. Consider adding an RWS Lubricant Applicator Needle to your order for easy and accurate application. Apply 5 to 6 drops to mainspring, barrel pivot pin, and cocking lever every 1000 shots. Do not over lubricate. Do not apply to compression chamber.