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WINPIN’s floor grinder is specialized in concrete, asphalt concrete bridge deck pavement roughness requirements, grind concrete surfaces or remove previous treatments Specifications: 1, the efficient suction of grinding dust is a result of the design of the dust guard and vacuum port. 2, ergonomically designed handlebar makes the operation more comfortable. 3, the handle stem can be folded over the machine which makes it more compact. 4, the light handle can be adjusted to any degree for operation. Parameter: Diameter: 400mm Power: 4kw Dimensions: 1450*520*1100mm Weight: 155kg Rated current: 16A Voltage: 220-400V Rotational speed: 1400rmp