The Mighty Hand Trainer is the manifest of what started as the Gonzo Grip. A tool to improve and work specific Armwrestling movements and positions. It has a hand/palm feel with a thumb to grab. The Mighty Hand rotates and locks in to whatever position you set it. Set it to train for hook and for top roll positions. Several attachment points for hooking up to bands, springs and pulely machines. The Mean Green grip is a smaller grip. Check out the picture to see size comparison in regards to the Big Red grip. The photo shows my hand, which measures 7-7/8" from wrist to tip of middle finger.