Adjustable dumbbell set with 15 weight combinations ranging from 2.5 kg to 24 kg for versatile training Smart tray with safety locks keeps dumbbells organized, secure, and easy to store Metallic gear mechanism enables quick and smooth weight adjustments during workouts Soft rubber handles provide a secure, comfortable, and non-slip grip Built with high-strength silicone steel sheet for durability and long-lasting use Ideal for a wide range of exercises including strength training, muscle building, and home workouts