Good Load-Bearing Capacity: This outdoor zip line kit is specially designed for children's exercise and play. The steel wire rope has been thickened to 0.25 inches, with a maximum weight capacity of 330 lbs, demonstrating excellent load-bearing capability. Durable materials and a stainless steel spring brake system provide a secure foundation. The zipline kit is CPC safety certified, giving parents peace of mind to safely accompany their children. Ball Bearing Design: Upgraded ball bearings with reinforced protective steel, addressing potential dangers down to the smallest details. The pulley is designed with a concave shape, polished to reduce damage to the rope, effectively supporting smooth pulley adjustments, ensuring stable and safe play. High-quality bearings deliver the best flight experience