Pellor Upscale Professional Wooden Gymnastic Rings With Number And Buckles Straps Pipe Diameter of the Ring: 33mm(1.3") Nylon Webbing Straps with number and quick-lock buckles is more convenient to adjust Pellor Pipe Diameter of the Ring: 33mm (1.3") VS FIG specification rings 28mm (1.1") Several different exercises can be done on these gymnastic rings Advanced design keeps the rings stable, allows for quick mounting, easy adjustment and light weight