RPM: 3000Size: 5-1/2" H. x 7-3/4" W. x 7-3/4" D.Surface: 6-3/4" Sq.Grinding Bit: 3/4"Features:- Convenient size- Accepts all standard bits- Great for classroomSpecifications:- Voltage: 110 volt.- Power: 115 VAC DC motor- 5 year warranty.