High Speed 1.5KW Water Cooled Spindle Motor Engraving Milling & Grinding Dynamic Balance Design Four High-quality Bearings Noise Reduction and Water Cooling Premium Material Refined Internal Details Multiple Application Speed: 8000-24000 R/min,Product Dimension: 2.6 x 8.6 in / 6.5 x 21.75 cm,Voltage: 220V~250V,Frequency: 400 Hz,Runout off: Less than 0.005 mm,Power: 1.5 KW,Weight: 8.4 lbs / 3.8 kg