Robert Baraban is known for producing some of the finest boutique grippers in the world from his home base in Austria. This is the classic, famous RB silver aluminum gripper, a standard favorite workhorse for many gripper aficionados.
Note that the product title is simply a ranking or name given to the grippers by Baraban; it does not denote the strength required to close the gripper. The Cannon PowerWorks average rating is listed on the product picture.