It's a bar that's supported by straps Leonardo. As soon you pull on it the bar tries to roll and unwind the straps, so it wants wrench itself out of you grip unless you can squeeze the living crap out of it. They work the thumbs and wrists really, really hard and are some of the toughest grip training tools I know of.
The bar in the middle of this pic is a two handed device and the PVC ones at the side are for single handed lifts. They are extreme grip tools, many people would struggle to lift even very light weights with them.
It's a bar that's supported by straps Leonardo. As soon you pull on it the bar tries to roll and unwind the straps, so it wants wrench itself out of you grip unless you can squeeze the living crap out of it. They work the thumbs and wrists really, really hard and are some of the toughest grip training tools I know of.
The bar in the middle of this pic is a two handed device and the PVC ones at the side are for single handed lifts. They are extreme grip tools, many people would struggle to lift even very light weights with them.
