SelectTech 552 Bowflex Dumbbells adjust from in 5 lbs. to 52.5 lbs. in 2.5 lb. increments (up to the first 25 lbs.) so you can gradually increase your strength without bulking up. One pair of these Bowflex dumbbells can replace 15 pairs of dumbbells taking up space in your home gym. They’re also coated weight plates eliminate clanking and banging while working out. When you order these Bowflex Dumbbells the “Secrets of the 4-Step Rep” workout DVD is included to show you how to get the most out of your workout by demonstrating over 30 exercises with over 80 variations.