UPGO 55LB Adjustable Dumbbells Single,15LB to 55LB Hex Adjustable Dumbbells of 2 Anti-Slip Handle, Suitable for Home Gym Exercise Equipment

【1 Second Weights Ajustment】A dream come true: One Hand One Second 5 Weights changed from 15lb to 55lb. Sportsroyals's exclusive weight adjustment design gives you better workout efficiency. 【Superior Material】Made of cast iron inside and thicken PE outside,our UPGO 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. 【Paramount Safety】With safety at the forefront, the UPGO Adjustable Dumbbells feature a special 8-groove locking mechanism that securely locks the dumbbell plates to the handle firmly when picked up. A rotating handle grip must be allowed to be rotate in the cradle.It's safe to perform overhead movements so you can focus on your workout. 【5lb increment Superb】Each weight plate weighs 5lb, giving you a wide range of options from 15lb,25lb,35lb,45lb to 55lb.The 5 lb inc