This kit has been developed to increase the weight range of our adjustable dumbbells. 2 piece plates fit on the inside of the handles against the backing plates. Still enough room for handgrip and is perfectly balanced. Most people rarely use less than 20 lb dumbbells so having a higher weight range that starts at 20 lbs is ideal. Now you
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easy to install reduce the space inside the dumbbell better for curl for me my hand not moving as without it better control and need to add less weight gain time under of 25lbs no need to add any plate