The 4170 by Rhin-O-Tuff is a heavy-duty coil inserter that can be attached as a module to any Rhin-O-Tuff vertical punching machine. It has 12-inch adjustable rollers that make for very easy and accurate coil insertion. This coil-inserting machine is able to bind up to 265 sheets of paper at once and can use plastic coil formats of either 4:1 or 5:1. The 4170 uses simple push button operation, but does not have a foot pedal option. It includes a binding diameter guide as well as a built-in plastic coil inserter and crimping pliers to make your use of the machine as easy as possible. At about 35 lbs, this machine is not too heavy and can be easily transported. It can be used as either a standalone coil inserter or can be added to a punching machine to make for a complete punch and bind operation. It is important to remember that the maximum plastic coil diameter this machine can work with is 32mm. This quality machine is made with enhanced rubber that is able to better handle the plastic coils. If you have need for a coil inserter, this machine is of the best quality you can find. Purchase yours today!