The Steelflex MBC-600 Bicep Curl is structurally and biomechanically designed for intensive club use, the Biceps Curl’ rigid body structure plays a critical role in the machine’s superb handling. Its large base frame aids stability and comfort, and yields a neutral weight distribution. Substantial rear and side subframes help eliminate lateral torsion and vibration. Biomechanically designed for maximum biceps muscles concentration and outstanding muscle development.