Key Pinch ClampGot a bunch of keys and other little trinkets lying around? Put them towards your key pinch training with this Key Pinch Clamp. Just insert your desired key or object into the opening and tighten the bolts from either side to clamp it down. Larger openings allow for large objects to be clamp. Choosing the smallest opening possible for desired object will better restrict the fingers and thumbs from sinking below the base plate. By default, the base is