Product Description Efficiently work out your abdominals without straining your lower back with Body-Solid Gut-Blaster Slings (AAB2). These ab slings are designed to suspend users above the ground for leg raises and oblique exercises, encouraging superior toning, trimming, and conditioning of the entire abdominal area. The slings can even be helpful for bad backs by helping stretch back muscles and decompressing the spine. These abdominal slings are made with 10,000-pound-capacity solid steel Fire and Rescue locking carabiners that attach to any chin-up bar Amazon.com Add pec flys to your Smith-based workout routine with the Powerline PPA13X pec attachment. Designed exclusively for use with the PSM144X Powerline Smith machine, the unit features a unique design that allows for both unilateral and bilateral movement. As a result, the resistance will be equal on both arms, so you'll develop your chest muscles faster and more effectively. The unit also includes a DuraFirm back pad for added comfort during your workouts. The Powerline pec attachment carries a 10-year warranty on the frame and a one-year warranty on all other parts.