Spiral coil bending machine, is a semi-automatic equipment based on the pneumatic operation. It is mainly used to cut off the excess parts at both ends of the coil at one time after the coil is inserted into the book hole, and then bend it and close it. So that the end of the coil is bent into the inside of the coil to avoid scratch. Welcome to visit our official website : http://www.autobindingmachine.com