Dual axis, diverging, independent unilateral arm movement provides a biomechanically correct back exercise. 360 degree articulating hand grips provides a natural range of motion. Gas assisted chest support for various arm lengths and total isolation of back muscles. Durable double stitched upholstery, with adjustable, gas assisted seat pad. 2″ x 3″ 11 gauge steel mainframe, and electrostatically applied powder coat paint finish (metallic silver).