... ring,IRONG RING,GYM RING,EXERCISE RING,GYMNASTIC RINGS,TOP QUALITY,CHEAPEST PRICEGYM RING,EXERCISE RING,GYMNASTIC RINGS,WE ARE FACTORY ... TOP QUALITY,CHEAPEST PRICE BEST SERVICE2 ABS rings + 2 STEEL fixing ... 28mm Inner Diameter: 175mm Outer Diameter: 230mm 5m (16.4') Long Strap ______________longer or shorter straps also available 2.5cm (1 ...