1.DC motor,big power. 2.High speed rotating grinding wheel,fast grinding, 3.High quality CE 4.Competitive price. 1.DC motor,big power,high speed rotating grinding wheel,fast grinding, facilitate water drainage. 2.Single 35mm of rough grinding and fine grinding. 3.Single-wheel holder and double-wheel holder which can be choosed. 4.Parameter: Grinding wheel size:100x35x14mm, rough grinding:180#, ...