Advantages of this product: adjust your strength training. Made of high quality solid cast iron - Solid cast iron construction by automatic casting production line. High quality and durability - Hammertone finish ensures extreme durability and high-quality flat surface. Wide use: suitable for commercial and home use in the gym. COMPATIBILITY Fits 25mm dumbbell and barbell bars. WEIGHT OPTIONS - Weight range: 4 x 1.25kg, 4 x 2.5kg, 2 x 5kg, 2 x 10kg weight set. SPECIFICATIONS PROIRON premium weight plate is available in a variety of different weight levels to allow the user to customize training. The sturdy cast iron construction provides durability for years to come. Try them for a variety of exercises, whether you're targeting specific muscle groups or strengthening and toning your entire body. PROIRON cast iron weight plates offered as below allow you to increase the weight of the barbell in small steps. 4 x 1.25 kg or 4 x 2.5 kg or 2 x 5 kg or 2 x 10 kg. All materials are strictly selected, free of phthalate and lead etc. harm the contents of the human body. PROIRON ensures that you train healthily.