Rediform Heavyweight Reinforced Filler Paper - Letter - 100 Sheets - Plain - Stapled/Glued - 20 lb Basis Weight - 8 1/2in x 11in - White Paper - Heavyweight, Reinforced Edges, Punched - 100 / Pack

Three-hole punched with 9/32in holes Reinforced holes with Mylar to prevent tears Rip-Proof film strip along the binding edge Though Rip-Proof film is strong, it has only 60% of the bulk of other reinforcing for more pages in ring binders