Equivalent to GBC binding coils (or GBC CoilBinds), our heavy duty spiral binding coils are fully compatible with all standard 4:1 pitch spiral binding machines. Our 12" coils have 48 loops while our 36" spiral binding coils have 144 loops. All binding supplies from Binding Depot (including spiral binding coils) are top quality - we guarantee it.
All spiral binding coils from Binding Depot are equivalent in quality to GBC binding coils (GBC CoilBinds) and are fully compatible with all standard 4:1 pitch spiral binding machines, including popular binding machine models from Akiles, USI, GBC, & Ibico.
To download a printer-friendly binding coil size chart, click here.