Features of Model: DS-818T 1) Use direct drive servo motor, only working in attaching flashily, usually standby there. It saves more than 90% power comparing with traditional machine. 2) High safety, with a unique built-in mechanical device and computer programs ensures double protection. 3) With stable punching force, which can reach to 1200kg instantly in 550w, and punch the metal snap button of φ40 easily.