Material: Hole diameter: 50 mm - Made of high-quality ABS plastic - Withstands even the heaviest weights and intensive training sessions. Advanced design: spring design for more safety during training, as the weight plates are firmly and securely fixed. Good workmanship: Thanks to the elastic bands on the inside, the closures hold perfectly and prevent the L from slipping or slipping. Easy to Use: A click-lock system for easy installation and removal. Installs in seconds for quick and easy installation and removal. Many uses: for training, development, weightlifting and more sports. They are often used for home, gym and outdoor activities. Properties: Material: durable ABS plastic. Weight: 129g. Colour: black. Properties: The special collar design ensures that the plate is firmly connected to the bar. Fits all standard 30mm dumbbells. One key to open and close, very practical and fast. Barbell clamps for weightlifting, powerlifting, fitness, strength training, etc. Content: 2 x 30mm stop weight plate