REPLACEMENT CABLES - This pair of Wicked Ridge replacement cables uses high-quality materials for lasting performance. CROSSBOW COMPATIBILITY - These replacement cables will fit the RDX 400. RECOMMENDED FREQUENCY - We recommend replacing your strings and cables every two years, regardless of the number of shots you take per year. PROPER MAINTENANCE - Crossbow lubricant can make a big difference in noise, accuracy, and the longevity of your crossbow strings & cables. We recommend applying every 20 shots. DON’T SETTLE FOR LESS - With TenPoint, you are arming yourself with a complete hunting system, including replacement parts specifically engineered to help you fill your freezer or put one in the record books!