TOTiyea 100 Pack Plastic Spiral Binding Coils,12mm(1/2") Spirals,90 Sheet Capacity,4:1 Pitch, Black

100 Per Box: A box of 100 Spiral Binding Coils ensures long-term productivity for all of your binding projects,allow you to bind paper sheets with ease and store for a long time. 90-SHEET CAPACITY:Plastic Spiral Binding Coils measure 12mm(1/2") in diameter,perfect to add and subtract paper sheets,can hold up to 90 sheets. FOR LETTER SIZE&A4: Length of Spiral Binding Coils is approx.12" ,can be used with letter size paper (8.5x11") or standard A4 size paper (8.3x11.7") 4:1 PITCH:Spiral Binding Coils(48 loops)are designed with a 4:1 pitch, fit any 4-holes-per-inch coil-binding machines. 360 Degree Rotation:Plastic Spiral Binding Coils allow 360 degree page-turning rotation capability for easier reading,bound projects can lay flat.