Check the listing for details. 50 Pack Double Loop Wire Binding Spines,1 Inch Diameter,2:1 Pitch,21-Loop, Bl.... Condition: New. Listed at 28.92 USD. 50 Pack Double Loop Wire Binding Spines,1 Inch Diameter,2:1 Pitch,21-Loop, Black, 220 Sheets Capacity, Letter Size ✓ Free 60 Day Returns ✓ Free Express Shipping Description: Features: Sheet Capacity: These double loop wire binding spines can hold up to 220 sheets of paper(20lb,80gsm).High Quality: The binding wires are made from high-quality wire that are sturdy and allow you to compile paper sheets with ease and store for a long time.Perfect Size: Each wire binding spine measures 1 inch in diameter and 0.8mm in thickness. Each spine has a 2:1 pitch and 21 double loops; 360-degree rotation.Binding wire: Use these double loop wire binding spines to bind important documents, files, or reports for an upcoming presentation or project.Compatible with most wire-binding systems (2:1 pitch and 21-hole pattern) Product Details: Material: NylonStyle: Double loopBrand: TOTiyeaSheet Size: LetterNumber Of Pockets: 50Manufacturer: ‎Rui Qiu (shanghai) E COMMERCE OFFICEBrand: ‎TOTiyeaItem Weight: ‎3.74 poundsPackage Dimensions: ‎11.65 x 8.94 x 2.6 inchesItem model number: ‎TTDW-25.4M-50P-BKMaterial Type: ‎NylonSize: ‎1 inch(2:1 pitch),220 sheet capacitySheet Size: ‎LetterManufacturer Part Number: ‎TT5207Date First Available: March 11, 2021