Power Twister Flexible Stretch, Professional Power Twister Heavy Duty Spring Chest Expander for Shoulder, Arms and Chest Exercises, 20KG Arm Rod Spring Steel Exerciser Power Wrist Hand Gripper Strengt
- The spring is usually heavily wound to provide resistance and some types of Power Twister allow you to adjust the tension.
- Materials: plastic, stainless steel spring.
- Flexible bars are great for arm, shoulder and chest exercises, ideal for strengthening the upper body.
- Excellent for training shoulders, arms and chest.
- Easy to carry, convenient for exercise, office, school, home, travel, etc.