Piercing steel blades recommended to be changed every 100,000 pages. Lubricating the changer blades with machine oil once every 10,000 pages ensures long-lasting use. It has a button and magnet system that allows the blades to come out easily for lubrication. Long-lasting use with metal interior and exterior parts. With the locked section on the back, you can easily pour the punched papers without lifting the machine. Thanks to the rubber on its base, the 2.5 kg machine does not scratch your table and does not slip. Ideal for use in accounting departments.