235mm Wooden Gymnastic Rings – Olympic Gym Strength Training & Fitness235mm Wooden Gymnastic Rings Olympic Gym Strength Training & Fitness Train your strength, flexibility, and agility on these Olympic gymnastic rings. Whether you train for fitness or competition, these 28 millimetre wooden rings from Randy Travis Machinery will ready you to surpass your goals. Easy for beginners to start on, these rings will give you a better grip than cheap plastic alternatives. They're lightweight, easy to adjust, and stable.