The Ravin bow press is a specialized tool designed exclusively for the R18 crossbow, ensuring precise and safe maintenance. It is essential to replace strings and cables every 2 years or after 200 shots to maintain optimal performance. When performing these replacements, only the Ravin Press should be used to avoid damage or voiding warranties. The Ravin bow press is not compatible with other crossbow models. Users must thoroughly read and adhere to the instructions and warnings provided with the Ravin bow press to ensure proper use and safety. Strings and Cables for Replacement Compatible with Ravin R18 and R18E