Features Outstanding cutting ability for metal working Restart protection prevents accidental startup when switching batteries Powerful brushless motor provides stable efficiency Specifications: Model: KU800 Voltage: 20 V Rated no-load speed: 0 - 8,500 rpm Disc size: 100 mm Disc bore: 16 mm Spindle thread: M10 Battery capacity: 4.0 Ah Charging time: 2 hours Machine weight: 1.7 kg Accessories: 2 batteries and 1 charger 1 Grinding Disc, Handle, Spanner Wrench