Features: Made with advanced ABS, nylon, it ensures a firm fixation of the barbell during high-intensity training, effectively preventing accidental drops. These barbell clamps feature an internal silicone pad that tightly grips the barbell rod, greatly increasing friction. Suitable for fitness rod with a diameter of 50mm, designed specifically for professional fitness enthusiasts to ensuring seamless compatibility with your barbell rod and barbell plates. The simplified design makes the installation process of this barbell buckle quick and easy to understand, with just a gentle press to complete the installation. It is also convenient to disassemble. By firmly gripping the barbell rod, this barbell buckle provides protections for every workout. Specifications: Component:ABS, Nylon Color: Black/Blue/Red Outer Diameter: about 8.5cm/3.35inch Inner Diameter: about 5cm/1.97inch Width: about 5cm/1.97inch Package Includes: 1pair Barbell Clamps Collars note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.