Specification: Inner diameter: 8mm (5/16 Inch); Length: 300mm/11.8 Inch; Number of binding pages: 40; Material: plastic; Color: Blue; Packing List: 50 Pcs Plastic Binding Comb Spines Advantage: The binding comb spines are made of long-lasting, strong plastic to ensure long-term productivity for all your binding projects, allowing you to easily bind papers and preserve them for a long time. Instruction: These binding comb spines are designed in 21 rings, making them suitable for any 21-hole rubber ring binding machine. Binding spirals provide a 360-degree page-turning rotation capability for easier reading. Application: These plastic binding comb spines are suitable for various office occasions and provide great convenience for file storage, file binding, paper collection, etc.It is a portable product for office and study. Note: These binding comb spines are suitable for binding machines. These plastic binding comb spines are suitable for various office occasions and provide great convenience for file storage, file binding, paper collection, etc.It is a portable product for office and study.

Specification
Inner diameter: 8mm (5/16 Inch)
Length: 300mm/11.8 Inch;
Number of binding pages: 40;
Material: plastic;
Color: Blue;
Packing List: 50 Pcs Plastic Binding Comb Spines

Advantage
The binding comb spines are made of long-lasting, strong plastic to ensure long-term productivity for all your binding projects, allowing you to easily bind papers and preserve them for a long time.

Instruction
These binding comb spines are designed in 21 rings, making them suitable for any 21-hole rubber ring binding machine. Binding spirals provide a 360-degree page-turning rotation capability for easier reading.

Note
These binding comb spines are suitable for binding machines.