Fantastic apparatus for increasing upper body and core strength. Pull Ups and Dips take on a whole new dimension with these rings while Muscle Ups and Iron Crosses are a true test of strength. ABS Rings are 235mm diameter and 27.5mm thick. Webbing straps are 25mm thick x 6m long which gives a maximum hang height of 3m. The steel cam buckle allows for easy adjustments and the embroidery on the straps can be used to match heights between the two rings.