Amazon.com : Coil Spiral Binding Machine,46 Holes Spiral Coil Book Puncher with Electric Coil Inserter, Electric Spiral Coil Binder with 100pcs Plastic Coil and Plier for Letter Size/A4/A5 or Smaller Sizes :
Amazon.com : TRUBIND Spiral/Coil Binding Machine - Electric Coil inserter - Manual Round Hole Punch - Disengaging pins - Adjustable Side Margin - Includes Crimping Tool - 4 to 1 Pitch - 20 Sheet Punch Capacity : Office Products