Thanks for this; my neighbor had a stroke and has numbness in his left forearm and hand.. I loaned him my gyroscopic wrist/grip thing, but I'll go tomorrow and

Thanks for this; my neighbor had a stroke and has numbness in his left forearm and hand.. I loaned him my gyroscopic wrist/grip thing, but I'll go tomorrow and have him look at this. He's a small engine mechanic so full motion and sensation is ideal.