Conditioning and strength--endurance.
The bold, new way to train, Zenith is designed for strong and healthy hands in the 21st century.
Zenith Trainer: If you do your work sets with a Captains of Crush Trainer, this is where we recommend you begin with Zenith grippers. It will be easier to close than a CoC Trainer, and that's by design.
No. 1475 (1 lb.) Zenith Trainer $39.95