BQ Olympic Barbell Plates are high-quality weight plates designed for commercial gyms and professional strength training. Featuring a composite structure of "Rubber/PU (Polyurethane) + Cast Iron," the outer layer is wrapped in highly wear-resistant and drop-resistant rubber or PU, while the inner core is high-density cast iron. This design not only ensures accurate weight but also effectively absorbs impact, reduces noise, and protects the gym floor. Available in a full range from 2.5kg to 25kg, perfectly compatible with standard Olympic barbells and various strength machines.