Great holds for your kids climbing wall or even your own climbing project. Designed with a jug like grip, these holds bolt to your wall with a 5.1cm bolt and a backing t-nut. All mounting hardware is included with your order. Here at Rocky Mountain Climbing Gear we make our climbing holds out of recycled materials. We have a lifetime warranty on all our holds. Rocky Mountain Climbing Holds will stand up to any environment and are the holds used in Military bases all over. the U.S. Thanks to our customers we are able to keep usable materials out of land fills Order ships USPS Priority Flat Rate.