Details
TruBind 10mm (3/8-inch) Binding Coils - COIL10 - Durable - 4:1 Pitch (4 Holes/inch) - 12 Inches Long - Pre-Sized to Fit Letter-Sized Paper - Compatible with TruBind Binding Machines - 100 per Box

QUALITY PLASTIC – Easily create bound projects that lay flat with our binding coils. Their durable plastic construction wonâ€t bend or snag, and they look great on business proposals, reports, menus, and more.
PRECUT COILS – Each TruBind coil is 12 inches long and fits a letter-sized book, document, or binding project perfectly. Our coils have plenty of excess, so you can crimp the ends for a finished look.
10-MM PRE-SIZED COILS – These TruBind plastic coils measure 10mm, or 3/8†in diameter, for increased durability and holding strength. Easily bind books, documents, or reports in-office with pre-sized coils.
BINDING CAPACITY – Our plastic coils can hold up to 75 sheets of standard 20# copy paper each when bound. That equals a maximum binding capacity of 11/32 inches in thickness, perfect for most office projects.
4:1 PITCH – Compatible with most 4:1 coil-binding machines, our plastic coils have 48 loops per 12-inch coil. Their 4:1 pitch matches the 4-holes-per-inch punching pattern on the side of your book.