Makita Angle Grinder 125mm 18V Li-ion Brushless Cordless Body Only DGA504Z Cordless angle grinder powered by 18V Li-ion battery and equipped with highly enhanced Brushless DC motor. A built-in controller changes the cutting speed automatically according to load condition, enabling users to obtain high speed rotation on light duty application/ high torque on heavy duty application User benefits. Electronic current limiter for overload protection. Equipped with automatic speed control: - Automatically changes the cutting speed according to load condition for an optimum operation.On light duty high speed rotation mode. On heavy duty high torque mode. DGA504Z Angle Grinder 125mm 18V Body Only. Noise sound pressure: 79 dB (A). Noise K factor: 3 dB (A). Max wheel diameter: 125 mm. No load speed: 8,500 RPM. Vibration K factor: 1.5 m/sec².