Lightweight and portable, the Jobsite Pro offers the same unique safety system found on the larger SawStop models: a braking system that can reduce a potentially severe injury to just a minor cut. Within 5 milliseconds of detecting contact between your skin and the saw blade, the braking system automatically stops the blade, then retracts it under the saw's table and shuts off power to the saw's motor. All of this happens quicker than the eye can see and certainly faster than anyone's ability to respond. Should the system ever activate, the cartridge used to stop the blade and the blade itself are easy to replace, allowing you and your saw to resume normal operation in just a few minutes.