I adopt twist ring metal fittings of the simple opening and shutting just to turn it with one hand lightly.
�œRing file
�œRound shape ring
�œInside pocket nothing
�œA standard: A5-S
�œThe number of the appropriate accommodation: 200 pieces
�œBack length: 36mm
�œA color: Milk white
�œMaterials: Cover = polypropylene
�œCover thickness: 1.0mm
�œExternal form dimensions: 220* vertical 176mm in width
�œThe number of the holes: 2 holes
�œA hole interval: 80mm
�œThe ring inside diameter: 25mm
�œWith two pieces of rotary cards