Bring the rock climber out of your child with these solid, heavy duty poly-resin climbing stones perfect to make you own climbing wall or to attach to any play equipment, wooden climbing frame or other structure. Just as much fun and healthy active play as if you had a mountain in your back garden! If you want to make things more challenging for your children, space them out more, if you want to make it easier or your children are quite small - place them closer together. The possibilities and combinations are endless! The screws and bolts required to secure safely to a wooden surface have been included to make installation easy. Size: approx 80-90mm in diameter - although shape and size may differ slightly from stone to stone. .