These Birch Wooden Gymnastics Rings are great for use in a gymnastics facility or to create your own ring strength setup for gymnastics strength training at home. These imported, multi-laminated, hardwood rings have maximum load bearing of 300kg. 
Specifications:

• Rings Pipe Diameter:32mm
• Rings External Diameter:23cm
• Rings Internal Diameter: 18cm
• Nylon Webbing Straps (W x L):3cm x 400cm
• Maximum Load: 661 lbs(300 kg).
• Ring Material: Birch
• Weight: approx 1.45kg