2" x 3" 11 gauge steel mainframe. Electrostatic ally applied powder coat paint finish, metallic silver. Durable double stitched upholstery. Sealed bearing pivot points. Adjustable seat pad with gas assist. Dual axis diverging arm movement provides a biomechanically correct back exercise. 360 degree articulating hand grips provide definition and natural range of motion. Gas assisted chest support for various arm lengths and total isolation of back muscles. Independent unilateral arm movement. Weight plate