DIY rock climbing wall: build your very own rock-climbing wall in your backyard! customize the wall pattern and adjust holds based on the preferred difficulty level. get creative, have fun, and climb on! kids in action: toddlers can begin rock climbing at 3 with these big holds for little hands. develop early agility, endurance, strength, balance, flexibility, coordination, and confidence. DIY replacement or addition: create your own backyard mountain playground and great for obstacle courses, children's birthday activities & jungle gym add-on accessories. details: 20 rock climbing holds - 1.25" bolts, t-nuts, washers, instructions & 3/16"Allen wrench. weather-resistant plastic and zinc-plated hardware for indoor or outdoor use. boys & girls age 6 & up. made with your child in mind: our toys and sporting goods are modernized versions of popular, best-selling classics, with improved safety and play functionality. older kids and adults enjoy them too. not eligible for online resale.