Instead of buying multiple sets of training equipment, you can change this dumbbell into a barbell with a central connecting nut, thus meeting your different exercise needs. And it has various weight settings for you to choose from. With regard to your safety, the two anti-slip rubber handles can provide you with a safe user experience. You can buy it with confidence as this dumbbell pairs weight plates are filled with concrete. The 2 steel bars also empower you to use it for a long time. To sum up, this is a great training equipment that can exercise many muscle groups of your body including arms, abs, shoulders, etc. If you are a fitness enthusiast, this is a must-have training dumbbell for you!