Haosail GT400 concrete floor grinder. Here are its general specifications: Model: GT400 Motor Power: 3kW or 4kW depending on configuration Operating Voltage: Typically 380V (Three Phase), but 220V options exist Weight: Approximately 75 kg Working Width: 400 mm Speed (RPM): Up to 900 RPM or 1440 RPM depending on configuration Dimensions: \(1100\times 460\times 980\) mm The machine is designed for surface preparation and polishing tasks, featuring a robust motor and integrated vacuum port compatibility for dust collection.