TOP QUALITY SIT UP BENCH for perfect fitness, weight loss and body builders. it can be fixed range by range depending on the size and strenght of the person. It is strong and effective
Ab King Pro offers an amazing 200 degree range of motion that targets your upper, lower, middle abs and obliques all at once with one smooth up and down motion! Adjustable resistance level, perfectly suited to any fitness level. Provides proper neck and back support to keep you in perfect form.