Adjustable Dumbbell Power Blocks

The adjustable dumbbell power blocks were invented by David Shields in the late 1980’s. The powerblock dumbbells is a major improvement over the older plate loaded adjustable dumbbells. These dumbbells worked by adding plates to a bar and the weights were secured by a pair of collars on both ends of the dumbbells. Although these dumbbells took up very little space, it took time to change the weight, and the weights could come off the dumbbells if the collars were not tightly secured. The Power Block dumbbells revolutionized free weights by allowing you to move a pin to adjust the weight.

Saftey is also a benefit of the power block dumbbells compared to traditional dumbbells. There are four stabilizer bars across the two ends, and you can spot someone by holding onto one of the top stabilizer bars. With the powerblocks, it’s easy to spot the person using the dumbbells without having to hold the wrist or elbows.