The DuraWire 450 Wire Closer is a superb heavy duty manual closer manufactured by Tamerica. Its all-metal components and steel base make it an indispensable companion for high volume wire binding jobs. Using the metal adjustment knobs, you can fine tune the closing width to the appropriate sized wire while compensating for any imperfections in individual spines. With the ability to close documents between 3/16" and 1-1/4" (every size we carry), in addition to having an open end for longer documents, the DuraWire 450 is our favorite manual wire closer due to its versatility, durability and fantastic price point. You can use the DuraWire 450 as a standalone unit or mount it to one of our modular punch machines for a complete wire binding solution. San Francisco Bay Area customers can call us toll free at 855-880-7500 to set up a free demonstration of the Tamerica DuraWire 450 at your place of business.