Here is another space saving dumbbell for serious strength training. The PowerBlock Pro 100 has a steel build and lets you easily change weight up to 100lbs with expansion kits. It has a magnetic polypropylene pin you can use to adjust weight. These pins have max load capacity of 500lbs.
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This dumbbell replaces 30 pairs of weight. What’s neat is you can use these with PowerBlock’s bars and kettlebell handle to take your workouts to the next level. A knurled grip version of this dumbbell is also available.
[where to get it][official site]
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