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- Material: plastic, stainless steel spring.
- Springs are usually heavily wound to provide resistance, and certain types of powerful torque devices allow you to adjust the tension.
- Back and shoulder training: bend the back and back shoulders by squeezing the grippers toward the middle back.
- Convenient to carry, convenient for sports, office, school, home, travel, etc.
- The flexible lever is very suitable for arms, shoulders and chest exercises, and is an ideal choice for enhancing upper body strength.
- Choosing a selection results in a full page refresh.
- Press the space key then arrow keys to make a selection.