• Power AutoStart Spinner Gyro Wrist Forearm Grip Strengthener W/Auto Start Feature
  
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• Heavyweight ZINC rotor provides 50 lbs-in torque at 10,000 RPM
• Strongest Aluminum Alloy shell construction made it worry-free to drop on the hard ground
• Enhanced Stability Control System for VIBRATION FREE operation and remarkable hand feel
• Ideal for building muscle and grip strength for professional and amateur athletes alike
• Compatible with Performance Digital LCD counter SM-02 (Battery free; displays various vital workout information )
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