Ravin Crossbow Serving and String Fluid R280

The Ravin serving and string fluid is a non-wax polymeric lubricant to be applied to the center serving of your string. Should be applied at least once a year or before use in weather below 32 degrees. Odor-free and waterproof. Non-wax polymeric lubricant;Applied to the center serving of your string;Odor-free;Waterproof Manufacturer Part Number: R280