1. This machine adopt direct-drive servo motor. This motor only work when fixing button while other time it will be under standby situation. Compare with traditional machine, it can save more than 90% power. 2. With triple safety protection devices of safety ring, computer program and mechanical stroke. This machine will add pressure to punch button only at the moment when upper button and down button touched so that ensure machine more safety. 3. Computer direct-drive, with stable pressure and the biggest pressure can reach to 1500kgs(750w). It can easily punch big size metal button in Φ60mm in high quality!