The Metolius Rock Rings 3D training holds help you to train for improved upper body strength. Single-point suspension allows rotation of finger, hand and arm joints for injury prevention. Rings can be easily taken down, transported and put up wherever you want. Each ring includes a large jug at the top, a deep 4-finger-width pocket, a 4-finger flat edge and a 3-finger pocket at the bottom. Sold in sets of 2. Includes mounting instructions and a detailed training guide with exercises and workouts.