Akiles DuoMac C51 Plastic Comb and 5:1 Coil Binding Machine – Printer's Parts & Equipment -USA
CB40B Automatic Plastic Coil Binding Machine
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 :