Product: Bookmark Magnifier BHM-13 Kind:Magnifier Material:PVC Multiple:3X Size:217*55*0.5mm Thickness:0.5mm Groove Pitch:0.3mm Detail: Products Description:Cooper moulding board can be pressed into the shape.We can assure the definition and the luminous flux of the products.They are made by the uncopied moulding board. Products Specialty:bookmark type,made of PVC,magnified three times,ultraclear.