The stapler is fully made of high-quality steel. It has two stapling modes: permanent and temporary, as well as a solid metal staple feeding mechanism. It accommodates up to 80 staples No. 24/6 and up to 100 staples No. 26/6.... It can punch through up to 30 sheets. Paper insertion depth up to 60 mm. The mechanism has a 2-year warranty if using ErichKrause staples.