plastic clipboard using thickened polypropylene (pp) plastic, will not be easily bent and cracked. Each plastic clipboard is 12.4X8.86 inches, thickness 0.05″. There is a metal piece on top of the metal clip that can be used to hang the board clip. The metal clip is made of high quality stainless steel, which is corrosion resistant and has a longer service life. The board body uses a special process to make it thicker and harder, with a frosted surface texture for more comfortable writing. Office plastic clipboard easily clips documents, papers, photos, invoices, worksheets, reports, lab data, etc. Suitable for a variety of scenes places, classrooms, hospitals, offices, homes, conference rooms, warehouses, etc. The prices for 2100pcs or over are based on ocean shipments.