Quickly create durable, professional, coil-bound documents with the Rhin-O-Tuff 3250CL Professional 4:1 Coil Binding System. Combining electric punching and coil insertion into one machine, the 3250CL is capable of punching and binding up to 25 sheets of 20 lb. paper at a time. The large and powerful coil roller quickly zips the coil into place, ready for you to cut and crimp the coil ends with the included crimper tool. Self-lubricating dies and an auto-reverse function to clear jams create a virtually maintenance-free unit- perfect for operators of any experience level. Designed for office use, the motor does not run continuously, making it quieter to operate while conserving energy.