Big Foot 4 Pack Kids Rock Climbing Holds / Climbing Grips w/ Hardware 4 Kids Climbing Holds Made in the USA with rigid rock like urethane. Excellent comfy hand or foot holds. Steel Installation hardware for indoor walls included (bolts + T-nuts + Wrench) Not Recommended for contoured concrete walls. For outdoor walls give us a call and we can upgrade your package to Stainless Steel Hardware for $8 480-334-4646