Smead 81778 R1218-8 11 x 17" Binder, Pressboard With Prong Fastener. Premium Pressboard binder features a Tyvek hinge and fastener to neatly bind and cover presentations, reports, manuscripts, proposals or other documents that require loose-leaf style binding. Two-piece style cover compresses material tightly to reduce bulk. Fastener compressor holds the report tightly together without damaging the document or the binder hinge. Matching colored Tyvek hinges give the cover a professional appearance while aiding in color coding. Binder is made of heavy-duty Premium Pressboard stock with an embossed leather-grain finish. Fastener dimensions are 8-1/2" center-to-center (C-C). Binder includes metal twin-prong fastener with compressor and is made with a high percentage of recycled material.