• Get in shape by working your whole body! It works the chest, shoulder, arm and abdominal muscles with all the necessary exercise equipment to keep your fitness at the highest level. Get in shape! Product Features The chest spring shapes the breasts, provides wide shoulders and a strong condition. Different muscle groups in the arm are worked with different uses of the coil spring. It works chest, shoulder, arm and abdominal muscles. 20 kg Product Dimensions: Length 62 cm.