The PowerBlock Classic Adjustable 5 to 45-Pounds per Dumbbell Set is great for toning.

Here are some of the many companies that manufacture an adjustable dumbbell set : Ironmaster, Bowflex, Powerblock, Xmark Fitness, Reebok, Bayou, and Weider. You can buy from these company's websites or look on Amazon.

Yes, PowerBlock-SportBlock-Dumbbell-Set is recommended for a serious body builder if he puts in sincere and proper efforts.

The exercise equipment that is made by the company PowerBlock is considered the "World's Best Dumbbell". The specialty is dumbbells but the company also makes kettlebells, barbells, benches, stands and accessories.

Courtney Hansen