Chest Expander Arm Expander Hand Gripper Arm Pull Bar

Material: stainless carbon steel wire spring & plastic handle; Size: Total length 65cm Max Expand Length: 120cm Weight: 780g Each spring tension is about 147N, 5 total 735N The advantages of using a chest arm expander are: - Biceps is a muscle with two muscular heads whose main function is bending the arm. - When flexing the arm, another muscle, the upper arm, is also used. - The upper arm can be fully exercised only when performing forearm lifting exercises. - In addition, the major flexor muscles in the upper forearm are also involved in flexion arm movement, and the flexors are strengthened by the side tension of the tensioner. Package include: 1 x Chest Expander with 5 Springs