The 40 V Max. Brushless 125 mm (5 inch) Slide Switch Angle Grinder delivers cutting speeds up to 40% faster then the 18 V equivalent. Re-designed to withstand harsh conditions the GA005GZ is highly durable with advanced protection against heat and dust. The improved heat dissipation capacity allows for continuous heavy duty operation. In addition there are a number of enhanced safety features including Active Feedback Sensors that will shut down the tool in the event of kickback. As well as soft start, anti-restart and an electric brake that will rapidly stop the wheel rotation for safe user operation.