The GripBoard proudly certifies athletes as having closed a Mash Monster Gripper with one hand under strict and uniformly ethical and authenticated conditions.

The certification is granted by The GripBoard as an independent third party with no ethical or commercial conflict of interest. The Mash Monster gripper was one of a limited number supplied by, rated and qualified by, and controlled by Cannon PowerWorks. This momentous feat was demonstrated and captured on video to assure it will be valid for historical posterity. Information about the retired Legacy Mash Monster certification is located at https://www.gripboard.com/mashmonster/.