This is a set including the thermal binding machine Thermabind 50T, six sets of cover files (10 sheets per set, for a total of 60 sheets), and the instruction manual. It shows some signs of use, but there are no issues with its operation. I made the last booklet today. The cover files are all A4 size and 12mm thick. I've used it for many years, but I no longer have documents to bind, so I'm putting it up for sale.