These heavy duty monkey bars are great for people building their own monkey bar set. These monkey bars are powder coated in Green and are available with or without mounting hardware. Overall length of the monkey bars is 22-1/2". Distance between mounting holes is 20-1/2". Monkey bars designed for an opening of 18-1/2". Buy 5 or more monkey bars and save! Mounting hardware is optional and is $1.50 per bar.