There are only a few back exercise equipment on the market. The most popular is the Inversion Table, which is an excellent way to exercise. Most inversion tables can be used as an ideal incline bench for a variety of sit ups, abdominal curls, twisting and stretching the back. It's an easy and fun way to improve muscular tone and flexibility.
Exercise Balls (or Swiss Balls) are relatively new pieces of fitness equipment, but are becoming more and more popular. The Exercise Ball can be used to exercise just the lower portions of the body, just the upper or the whole body at once.
Other back exercise equipment includes the body solid power line lat machine which enables you to perform a wide variety of upper body building exercises as well as the KPS RC (Roman chair) for stretching and the back manager and the spine corrector for exercising the back muscles.