ProsourceFit Wooden Gymnastics Rings can be used at the gym or at home for a variety of exercises to develop upper body and core strength. With extra-long 17’ straps, the rings can be easily adjusted and installed for working on push-ups, dips, muscle-ups, levers and many more upper body, core and balance exercises. The wood rings help to absorb moisture to prevent slipping and provide greater traction without the need for chalk. Safety note: Ensure that your straps and anchor point are fully secure before working out. Standard 1.25-inch diameter.