About this item 【Versatile 5-in-1 Design】Enjoy the convenience of an Adjustable Dumbbell with 5 weight options in a single, compact design. Easily switch between weights to customize your workout, catering to all fitness levels from beginners to advanced enthusiasts. The weight adjustment range for the 52-pound dumbbell is: 3/16/28/40/52 LB. 【Instant Weight Change】Swiftly select your desired weight in just 1 second with the one-handed spin mechanism. The unique weight adjustment design ensures a seamless and convenient experience, allowing you to maximize training efficiency. 【Enhanced Safety Features】Prioritize safety during workouts with Roinoim Adjustable Dumbbells featuring a special locking mechanism. Eight secure locking notches firmly hold the dumbbell plates onto the handles, providing stability and peace of mind. 【Optimized Space Utilization】Designed for maximum space-saving, Roinoim Adjustable Dumbbells offer an impressive 80% reduction in storage space. Conveniently use and store them to meet your diverse needs without cluttering your exercise area. 【Cost-Effective Fitness Solution】Compared to traditional dumbbells, Roinoim Adjustable Dumbbells offer exceptional cost-effectiveness. With just one set, you can perform a wide range of full-body exercises in the comfort of your home, saving you money while achieving comprehensive fitness goals. › See more product details