Detailed Product Description Trigger Type 4D Ring Holder rrigger type 4-Q ring folder; 3-Q/2-Q availablePull open type: 2-oblique ... D-ring folder; 3-OD/2-OD also availableSize: A3, A4, A5 ... -resistant 2) Can be recycled3)produce/custom-made file folders,ring binders,loose-leaf binders,paper file ,box file ,lever arch ...