The STERLING WIREMASTER PRO combines both economy and complete automation. The Wiremaster Pro is a fully automatic double loop wire binder capable of binding books at the brisk pace of 3,000 per hour. It is economical and changes over in about thirty minutes. The operator drops a book on the conveyor and the Wiremaster Pro does the rest. That's right-- it inserts the wire, crimps the wire, and delivers the book onto a conveyor. The machine will bind books from 4 X 4 inches up to 16 X 16 inches. Spiral diameters can range from 1/4 of an inch to 1 1/4 inch, allowing for a maximum book thickness of one inch. Skip binding up to five parts is attainable. An automatic cover flipper and book flipper is available. To see a video of this machine, please visit http://spielassociates.com/double-loop-wire-binders.html or call 877-BINDERY.