The Ravin serving fluid is an odor-free, waterproof, non-wax polymeric lubricant used to protect and condition strings and serving. Fluid should be applied to the center serving of crossbow strings at least once a year or before use in temperatures below 32° F. Ravin Crossbows Ravin Serving and String Fluid R280
Excalibur Matrix String (for Matrix Crossbows Only) 1992 $37.99 
Excalibur Matrix String Blood Red 1992BR $40.99 Ravin Crossbows Ravin Serving and String Fluid R280
$16.99
