Specifications:

[Buy four get one free] a total of 5

[Buy eight get two free] a total of 10

Color:

Thickness 2CM blue (129 paper can be stored)

Thickness 3.5CM Blue (321 pieces of paper can be installed)

Thickness 5.5CM Blue (can hold 521 pieces of paper)

Thickness 7.5CM Blue (651 can be installed)

Thickness 1.2CM Black (can store 59 pieces of paper

Thickness 1.2CM dark blue (59 pieces of paper can be stored)

Thickness 2.5cm blue (200 pieces can be stored)

3.5CM thick black (321 pieces of paper can be installed)

Thickness 5.5CM Black (can hold 521 pieces of paper)

Thickness 7.5CM Black (can hold 651 pieces of paper)

Black with a thickness of 2CM (131 pieces of paper can be stored)

3.5CM blue thickened (86c top with quality)

5.5CM blue thickened (86c top with quality)

7.5CM blue thickened (86c top with quality)

2CM blue thickened (87c top with quality)