GBC CombBind Prepunched Paper, Binding, 8.5 x 11 Inches, White, 500 Sheets per Pack (2020046) 19-hole prepunched paper for binding systems eliminates the need for manual punching on big jobs. Bond paper runs cleanly through office equipment including copiers, laser printers and ink jet printers. 84 Brightness rating, 20-lb. paper. Pack of 500 sheets