【5 in 1 Dumbbells】Each dumbbell offers 5 weight options (5 lbs, 10 lbs, 15 lbs, 20 lbs, 25 lbs) for a total of 50 lbs per pair. Sportsroyal Adjustable Weights Dumbbells Set can be quickly & smoothly adjusted in one second. Simply twist the handle to change the weights. Meet your 5 weights of workout intensity, replace 5 pairs of dumbbells set. It's very easy to use - just twist the grip to the desired weight and lift. 【1 Second Weights Ajustment】A dream come true: One Hand One Second 5 Weights changed from 5lb to 25lb. Sportsroyals's exclusive weight adjustment design gives you better workout efficiency. 【Superior Material】Made of cast iron inside and neoprene outside,our Sportsroyals dumbbell plates are superior in durability, safety and longevity. It will not crack or bend after repeated use. The outer material is more durable and less prone to cracking than vinyl like other dumbbells, making it a more desirable choice for long term use.