Predominantly a wrist strength training tool ( although it seems to work everything upper body, including the torso!) available from: http://www.davidhorne-gripmaster.com/index.html
The ways of training are as many and varied as any loadable equipment only more-so!
Great for prehab and rehab aswell as strength and coordination building.
incredible Mike! your phisique looks more "bulky"/more muscles! hard work i guess! how many weight around u using ?
ewokhugo 2 years ago