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Perfect for building upper body strength
The role of throwing arm device, Methods is also known as grip strength. It is used to exercise the arm muscles.Its main exercise muscles and chest auxiliary exercise wrist.
Increase the muscle strength of upper limbs.including the pectoralis major shoulder elbow and wrist joints and other parts of the power.
It can make the upper limb muscles and increase the arm strength.Improve the quality of the body
The is a portable exercise device that is great for home, office or travel use.
Method of use：
Two arms bending spring after the neck.
Two arms forward and upward bending spring and then relax.
Two arms to her chest bending spring and then straight slowly relax.
Stand up two feet apart.your right elbow bent with his left hand bending spring and then left elbow bend with the right hand bending spring.
Behind two arms to hold spring and then bending straight down gradually.
The pursuit of quantity not weight.
Matters needing attention:
Before use please check whether the methods implement the connection parts is firm.no loose phenomenon.
Please Make sure you have enough power to use the30KG or 40KG or 50KG or 60KG Level
Before use, please carry arm device handle seat belt on your wrist.
When using, should choose relatively spacious field exercise, lest hurt to sell.
Operating at a constant speed when using, should do.
Below are for reference only, how to choose according to individual constitution and decide, please 20kg(Lightweight),30kg(Strong),40kg(Professional),50kg(Strongest) , 60kg(Invincible)

Keapuia Power Twister Bar-Arm,Shoulder Builder Exercise Chest and Bicep Blaster Workout Equipment - B5HM7VG7R