Upgrading your wooden swing set is a cinch with the green metal Monkey Bars kit by Swing-N-Slide. Monkey bars not only add a great activity to your backyard play set, but they also help promote upper body strength and agility in your child. These durable, powder coated metal rungs can also be used as play set ladder rungs. Each kit includes (6) 21.5″ metal rungs, fully illustrated plans and all hardware required for mounting.