IronMind - Zenith GrippersConditioning and strength endurance. The bold, new way to train, Zenith is designed for strong and healthy hands in the 21st century. Its super smooth ride makes it hard to put down you'll love it at first squeeze: warm ups, cool downs, prehab, rehab, conditioning and strength silky smooth handles and a no bump ride proprietary GR8 R springs, designed for low gear, moderate to high rep training precision manufacturing for superb build quality, and