The XMark Vertical Knee Raise with Dip Station will provide defined abs, stronger arms, a well-developed chest, and a strong back. While the vertical knee raise station targets your core and abs, the push-up station focuses on your chest and the sit-up station focuses on you abdominals. Twin dip handles are ergonomically spaced to help give a great dip workout to strengthen arms and shoulders. Simple, basic, rugged and, most of all, effective, the XM-4437 vertical knee raise enables an impressive list of exercises packed into one product. Sculpt, build and define your body with XMark, the mark of excellence.