50 Per Box: A box of 50 Spiral Binding Coils ensures long-term productivity for all of your binding projects, allowing you to complete your binding projects with ease and store them for a long time.
75-SHEET CAPACITY & 4:1 PITCH: These plastic spiral binding coils measure 10mm(3/8") in diameter, could hold up to 75 sheets of paper(20lb). TOTiyea spiral binding coils (48 loops) are designed with a 4:1 pitch, and fit most of the 4-holes-per-inch coil-binding machines.
FOR LETTER SIZE & A4: The length of TOTiyea spiral binding coils is approx.12", which is suitable for binding with letter size paper (8.5x11") or standard A4 size paper (8.3x11.7"). Perfect for organizing engineer files, business projects, office documents, and university presentations.
BRIGHT & VIBRANT COLOR: The set includes 10 binding coils in each of the following 5 colors: red, orange, yellow, blue, and green. Bright and vibrant colors can add personality and energy to your binding projects. Different colors can also visually categorize various themes or projects, making it easy for you to establish your own binding system and conveniently access your materials.
360 Degree Rotation: TOTiyea plastic spiral binding coils allow 360-degree page-turning rotation for easier reading, enabling your bound projects to lay flat on the desk.