Rock Prodigy ForgeThe Rock Prodigy Forge uses the same principles that make the Rock Prodigy Training Center so effective, and it adds new dimensions of difficulty and ergonomics. New features include: a dedicated closed crimp grip with thumb support, all new edge profiles, drafted pockets, steeper slopers and a smoother texture throughout. All hold dimensions are different from the RP Training Center, making it the perfect addition to your training arsenal.