The A350 Biaxial Upper Back is specially designed to isolate the muscles of the upper back. It is a very effective back training machine and its unilateral movement promotes muscle symmetry by preventing the strong side from helping the weaker side; the A350 Biaxial Upper Back’s low inertia design gives you a smooth resistance and is perfect for all people at any fitness level. It features a unique axis of rotation that allows a greater range of motion, a large digital display that shows resistance, sets, repetitions, and peak power, a thumb button at a suitable position that lets you change resistance without changing position, a chip system and integrated technology and compact footprint. With this machine, you can enjoy a pain-free range of motion, achieve your goals very faster, train at any speed as you wish, and have Unique versatility