5 Bolt on climbing roof jugs with 5-2"x 3/8" Bolts and 5-3/8 inch t-nuts. These roof jugs are great for your angled walls or ceilings and provide more training options for your wall. They are meant to be installed into plywood. They are manufactured from recycled materials and are very realistic and rock like in feel. They are a very popular item with our climbers. Rocky Mountain Gear is a trademarked company. Re selling our items without contacting us first is not advised. Please contact us if you have an issue with your order. We are very responsive to messages. Rocky Mountain Climbing Gear ia 100% American Made. We offer expedite shipping as well.