The 15.0 Amp Super Sawzall® Recip Saw includes Constant Power Technology™;;; which maintains constant speed and power under load for unmatched cutting performance. The 15.0 amp motor provides the industry's highest overload protection and the patented Gear Protecting Clutch extends gear and motor life by absorbing high impact forces caused by sudden blade lock-ups. The patented Counter Balance Mechanism reduces user vibration.