... 3.size: any size is availab high quality exercise book with wire-O Ring binding Item brandXFBOOKCoverart paper,hard cover paper,pp ... 70g,80g,90g,100g wooden offset paperBindingglued binding, spiral binding,wire o binding,saddle stitching bindingPacking 10pcs/shrinkwrap,200pcs/carton Payment ... production time 3)OEM is welcome! high quality exercise book with wire-O Ring binding