✔ STAINLESS STEEL PARTS ... Without Stainless Steel parts you will notice rusting within the first year and you will have to replace the main cable. Avoid galvanized steel parts as they will rust! ✔ FAIL SAFE SYSTEM ... In the extreme event the turnbuckle breaks we provide a backup system that is easy to install, the safety of your loved ones is our first priority ✔ SAFEST SPRING BRAKE ... We provide a longer 7.5' brake with rubber ends that wont crack compared to plastic ends. The smooth 7.5' spring brake ensures your children are safe at all time ✔ YOUR KIDS WILL ENJOY PLAYING OUTSIDE ... Take advantage of this limited time offer now so you can have your kids staying fit and healthy with the Hyponix Sporting zipline. You won't have to nag your kids to get outside for some exercise! They'll be gliding in the air with their zipline! ✔ A Brand With A Cause ... Every Zipline purchased, we donate a days worth of meals to children that are in need. This is the ultimate win-win your children will be ecstatic to play on the Zip Line and you will help feed another child for a day.