Body Solid SGH500 GHDThe Body Solid SGH500 GHD provides a strength training machine that works a plethora of the body's muscle areas. In particular, it is great for the glutes, hamstrings, calves, abs, and obliques. Key Features Fitness professionals worldwide recognize the Roman Chair & Back Hyperextension for its unsurpassed development of the abdominal, oblique, lower back, glute, and hamstrings. Thick, double stitched DuraFirm pads and oversize 8" foam rollers provide