Binditek 50 Pack Double Loop Wire Binding Spines, 1Inch for Letter Size, 2:1 Pitch, 220 Sheet Capacity, 21-Loop, Black, Students and Coworkers

220 SHEET CAPACITY: Each twin loop binding wire measures 1" in diameter and 1.2mm in thickness, which can hold up to 220 sheets of 20# paper. 50 PER BOX: These binding wires are made from high quality metal material, featuring with double-loop style to offer security and durability, stable enough for your long-term needs. 2:1 PITCH: These double loop wires binding spines have 2 holes per inch, they are compatible with 2:1 pitch wire binding machines or the machines with disengaging pins. 11 INCHES: These 21 loops double loop binding wires are designed to be used with letter sized paper, or you can bind smaller projects by cutting the over size part. BINDING WIRE: Double loop binding wires can gather your files together and organize them to keep in order, no more scattering or causing mess, ideal choice for your presentation, meeting or office.