Ordering Unit: 25/BXPressGuard® Report Cover, Metal Prong with Compressor, Top Fastener, 500 Sheets/2" Capacity, Letter, Black Two-piece cover compresses material tightly to reduce bulk. Neatly bind and cover presentations, reports, manuscripts, proposals or other documents that require loose-leaf style binding. Choose from side or top edge binding. Heavy-duty stock is coated to resist moisture.