Rediform Heavyweight Reinforced Filler Paper Letter 100 Sheets Plain StapledGlued 20 lb Basis Weight 8 12 x 11 White Paper Heavyweight, Reinforced Edges, Punched 100 Pack Heavyweight filler paper features a clear RipProof film strip along the binding edge to prevent sheets from pulling through at ring binder holes Ideal for price lists, parts lists, instruction manuals and other sheets that receive heavy usage Though RipProof film is remarkably strong, it has only 60 percent of the bulk of other reinforcing to allow more pages in ring binders Each page of white bond paper has three 932 round holes already punched to save time while filing and organizing