Tenderfoot - Kids Rock Climbing Holds - 20 Pack w/ Hardware 20 Blue & Green Kids Grips Made in the USA with rigid rock-like urethane. Good mix of beginner and intermediate holds to keep kids challenged. Durable enough for both kids and adults. Steel Installation hardware included (Bolts + T-nuts + Wrench) Wall Panels must be at least .75 inches thick. (23/32" plywood)