Check the listing for details. 3 Set 1" B7 2 Hole D Ring Binder Mechanisms, 50mm Silver Tone. Condition: New with tags. Listed at 19.46 USD. These Binder Mechanisms have significant advantages in organizing files and notes and have become the preferred tool for many people. In addition to being a file organization tool, they can also be used to make notes, notebooks, etc., meeting the diverse needs of users.Specifications:Color: Silver Tone;Size: 133 x 26 x 60mm / 5.24 x 1.02 x 2.36 inch (L*W*H);Ring Inner Height: 26mm / 1.02 inch;Recommend Paper Size: B7 2 Hole;Material: Metal;Packing List: 3 SetAdvantage:The Binder Mechanism is made of durable and long-lasting metal material. This allows it to withstand the wear and tear and collisions of daily use and extend its service life.The D-ring design is designed to fit tightly between the flat edge and the base, achieving a more stable loose-leaf fixation and effectively reducing the risk of sliding.