10 colored, bolt-on rock climbing holds with *FREE* Hardware. What are they made of? Recycled materials including polyurethane, Vinyl Ester, Polyester, Plastics, Epoxy, Vegetable oil and other organic materials. These holds are nontoxic. Our holds are very strong and will stand up to any climate. Holds are approximately the size of a baseball. Holds come in over 200 different unique shapes. Use with 3/4" plywood. Use 2-2 1/2" bolts, 3/8" T Nuts. These holds come with a lifetime guarantee. Return policy is 60 days refund for product, $5 restocking fee. Rocky Mountain Climbing Gear (208) 704-0291 All Orders Made After December 16th, 2016 Will Not Be Guaranteed Before Christmas. We Use USPS Only. Rocky Mountain Gear is a trademarked company. Re selling our items without contacting us first is not advised. If we do catch you re selling our items we may not guarantee return of the item. All images are copy right to the trademark Rocky Mountain Climbing Gear