The 125mm Slide Switch AFT Variable speed Angle Grinder has a powerful 1,900W motor for more output and delivers 11,500 RPM to handle the most demanding applications. The large paddle switch design allows for easy power start in multiple grip positions. The grinder features Active Feedback-sensing Technology electronically turns off the motor if the rotation of the wheel is suddenly forced to stop and a narrow barrel grip design and a rubberized side handle for increased user comfort. An integrated tether loop can be attached to lanyards when working at high altitudes. There is no lock-on power switch, but there is a two-stage power lock-off. The Makita Angle Grinder is ideal for welders, fabricators, masons, maintenance/repair and more.