Compact and lightweight Ideal for high performance in continuous, heavy duty applications Variable speed controlled by trigger and constant speed control Forward/reverse rotation Electronic 4 stage impact power Trigger switch with full speed mode 350 Nm maximum fastening torque, 630 Nm nut busting torque square drive (c-ring) Standard bolt M10 to M20, High strength bolt M10 to M16, Weight: 5.732018812 Pounds, Manufacturer: Makita