Power Block GF-SPDBLK24 Adjustable SpeedBlock Dumbbell Review

Power Block GF-SPDBLK24 Adjustable SpeedBlock Dumbbell

The Power Block GF-SPDBLK24 Adjustable SpeedBlock Dumbbells are easy to use. Although they come with one of the most complex adjustment systems in this class, they still represent a viable option when it comes to practicality. The system is easy to use as it is based on one of the few weight plate designs which also use different colors for each weight.

This Product Was Featured in Our Best Adjustable Dumbbells Article.

With a maximum capacity of 24lbs per individual weight, Power Block uses 3lbs increments. They are adjustable from 3lbs to 24 lbs. This system has impressive practicality. Instead of purchasing a full set of dumbbells with a rack to organize them, you can simply use the adjustable SpeedBlock dumbbells.


  • Innovative design
  • Different colors for the weight plates
  • 10-year warranty
  • Compact and safe construction
  • Replaces 8 pairs of dumbbells


  • Needs flat surfaces for pin adjustment
  • Light for some users

The adjustable dumbbells are recommended for all people regardless of age. You can use them to lose weight but you can also use them to maintain strength levels which might be declining with age. At the same time, they are highly recommended to those seeking to improve joint mobility and strength as well.

Video: Review of the versatile SpeedBlock dumbbells

Workout efficiency

One of the best characteristics of adjustable dumbbells is the wider variety of exercises that can be performed. As with all adjustable dumbbells, they might not be recommended for only a few exercises such as the seated triceps extensions as they are difficult to hold in this position.

But there are many exercises you can perform. Among the favorite exercises, users report bicep curls and one-hand triceps extensions which are great for arm muscles toning. They are used for should exercises as well. When it comes to dealing with shoulder mobility issues, exercises are among the best options to tackle the problem. There are also many other types of exercises you can perform. Women attest that they can be easily used for leg workouts and squats specifically. You can hold a dumbbell in each hand while squatting to add an extra challenge to your leg workouts.

Furthermore, the weights can be considered when it comes to circuit training as well. Using bodyweight exercises, you can combine weight training into one of the best workouts for weight loss which is circuit training.

When it comes to strength training, you can use the dumbbells to tone most muscles of the body. The main strength of the weights, as outlined by most users, comes with their balance and the speed in which they can be adjusted. With great overall durability, they thus represent real solutions for your home training routines, even in the conditions in which you train every day.

Integrated technologies

The engineering of the dumbbells is at a high standard. This can be seen in their balance which is considerably better than what you can find in traditional dumbbells. While they seem simple, balancing them is a true masterpiece as many users report. With a solid grip, you have full control of the weights and you do not feel as if they were actually adjustable. They feel solid just as non-adjustable weights and this recommends them for all styles of training.

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While there are many great dumbbells to consider, not all of them manage this part right. Power Block has different types of options and the GF-SPDBLK24 is no exception. This precise construction also allows the manufacturer to offer one of the leading warranties in this class. With 10-year coverage of any manufacturing defects, the weights become a long-term solution for your home fitness equipment.


Power Block GF-SPDBLK24 Adjustable SpeedBlock Dumbbells Review Adjust

The adjustability of the weights is where the innovation lies. The selector pin is what allows you to use the weights you want. This includes the 3, 6, 9, 12, 15, 18, 21 and 24lbs options. Each of these weights has a different color as well. When you get used to the color system, it is even faster to adjust your weights. For example, the gray color is associated with the 24lbs weight. The red color is associated with the 21lbs weight. The blue color is associated with the 18lbs weight, etc.

This easy system is yet to be implemented in many adjustable dumbbells on the market and this is where Power Block has a major advantage. It is an advantage especially for beginners who might feel intimidated by the different products on the market which seem complicated. This is why training needs to be as simple as possible to offer a real chance for beginners to join workouts as well. This system works well and it is made to last in time as well. This is why the manufacturer also offers an impressive warranty as well, even if some people had unfounded doubts about their durability.

Made with rubberized handles as well, the dumbbells are great for longer workouts. Even if your weights begin to drop as you get tired, you can still maintain a good grip with the rubberized finish. This can also prove an important advantage during intense workouts where your palms sweat as well.

Together with the weight system, the dumbbells have patented adjustability which makes them unique in their class. The system is what users enjoy the most, especially with the weight stand which places the dumbbells in a more accessible position within easy reach.


The adjustable SpeedBlock dumbbells are very popular with those training at home. The unique adjustability system and the impressive construction balance of the weights are what make them so attractive for people of all ages. Even if the weights are not the heaviest in their class, they represent a versatile solution for home training. Strength and circuit training can be performed with the weights. Furthermore, they can be used for better mobility as well.

It is recommended to choose them especially if you are looking to maximize the exercises you perform as they are very versatile. These advantages are based on solid construction. Unlike many other adjustable dumbbells which get upgraded in a short period of time, the SpeedBlock dumbbells are very durable. With the 10-year warranty, they don’t need replacing anytime soon.  

This article was last updated on July 13, 2021 .