Ravin Premium Arrow Rest Ravin Premium Arrow Rest with rifle-like accuracy;Anodized CNC aluminum design for durability;Stainless-steel ball-bearing reduces friction;Lightweight at only 0.4 oz;Mounting screws are included for easy assembly;Requires a #10 Allen wrench for installation;Not compatible with R500 models;Emphasizes Ravin's focus on accuracy, technology, and top performance