High Quality & Advanced TechnologyDumbbell's weight plate covered with frosted powder coating, which make it hardly abrasion and don't have foul smell. Using with dumbbell tray, enjoy the smoothly training process. Durable handle combine with anti-slip texture, which would not rusty and provide more safty. New Structural DesignExclusive design of adjustment countweight plate, simply adjust by holding the handleaccording to the weight you need, turn the pointer to the corresponding number to adjust. The latest design locks the dumbbells with 8 locking, which ensure the dumbell set are fastened stably and tightly to ensure your safety.