Key features

• •Available in six size including 1/4", 5/16", 3/8", 1/2", 5/8", 3/4" to match the internal reports or functional documents; Spine Type: Coils; Package Contain: Pack of 150(about 25PCS per size)
• •4:1 PITCH: Our spiral binding coils(48 loops)are designed with a 4:1 pitch and fit any 4-holes-per-inch coil binding machine. They help you combine your report pages, calendars, documents, and more(note: the coils are not compatible with the Cinch machine)
• •FOR LETTER SIZE: The Length of spiral binding coils is approx.12", and can be used with letter size paper (8.5x11") or standard A4 size paper (8.3x11.7"). Our binding coils are light and portable, you can also cut it to the size you need according to your needs, and it is suitable for most people to use
• •HIGH QUALITY: Our binding coils are made of high-quality plastic, sturdy, and long-lasting, allowing you to compile paper easily and store it for a long time. You can lay the binding coils flat, rotate them 360 degrees, and add and reduce paper easily
• •WIDELY USE: The binding coils are designed to work with spiral binding machines, not for comb or wire binding machines. The binder coils can help you organize messy documents, keep them organized and orderly which are ideal for office documents, home education, business presentations, and more, versatile and practical