Unleash the potential of your pull-up bar with the Lifeline Pullup Revolution, adjustable pull-up assistance system. Improve arm, shoulders, and chest strength with assisted pull ups and chin ups. Build stabilizer muscles in abs and back with planks, pushups and knee ups! The Pullup Revolution assists in pullup efficiency by allowing you to perform more, higher quality reps with proper form than before. You can do extra reps past muscle exhaustion to develop that V-shaped torso, broad shoulders, and narrow waist. The Pullup Revolution has a patented design that allows you to easily add or subtract from 1 to 3 cables for adjustable assistance up to 100 pounds of your body weight. Just remove cables from the patented 3-in-1 cable pocket to decrease the assistance level while you get progressively stronger. The Heavy Duty Bar Hook attaches easily to a pull-up bar and ensures a secure connection while the integrated strap lock allows fast strap height adjustment. The Pull-up Revolution will take you from any starting fitness level to above and beyond the bar by opening up an entirely new level of bar exercises, allowing you to sculpt and strengthen more muscles than ever before.