The HOS-D013 Olympic Barbell Bar is carefully engineered to meet specific standards set by the International Weightlifting Federation (IWF). These standards ensure that the bar is safe and consistent across all competitions. The bar is made from high-quality steel, with a specific diameter and knurling pattern for optimal grip. The sleeves are precision-engineered to rotate smoothly, and the bar is subjected to rigorous testing to ensure its durability.