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This is the Dynamax Gyro Core Trainer: neat fitness tool that you can use to strengthen your upper body and tone your core, pecs, wrists, shoulders, and other parts of your body. It doesn’t require batteries to work. It may weigh less than 5lbs but can produce up to 160 pounds of resistance.
This core trainer has built-in LED lights. It has a gyro speed of 8000 RPM. The faster you go, the more resistance you will get.
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