100 Pack Plastic Spiral Binding Coils, 8mm(5/16'),40 Sheet Capacity,4:1 Pitch, B

High Quality: Durable and strong plastic spiral binding coils allow you to compile paper sheets with ease and store for a long time.
Sheet Capacity: 40 sheets, Spine Diameter: 8mm(5/16 inch), Package Contain: Pack of 100 binding spirals.
Dimensions: The 48 loops plastic binding spirals fit letter sized paper(8.5x11.0 inches) All binding spirals have a 4:1 pitch, they will fit any binding machine that punches 4 holes per inch.
Ideal For Busy Offices: Plastic binding coils are used in engineer file, business project, office documents, university presentations.
Convenience: Binding coils are in lay- flat. 360-degree rotation to add and subtract paper sheets easily.