Specification: 307 x 240 x 60mm  
Cover thickness: 2.3mm  
Spine: 40mm  
Quantity/carton: 40
Carton size: 660 x 480 x 310mm  
Colors: Red, black, blue, green, and gray  
Description:

Cardboard full coated by PVC clip file
With metal lever clip to secure contents
Removable wrap-around spine label can be printed as clients' design
The color, thickness, spine, and logo can be designed by customer's requirements