... of applicationmainly used for woodwork,furniture,acrylic,metal,stone,glass,ceramic, construction model, cnc carving,engraving,cutting,polishing, and drilling ... . Imported bearing;bearings with dust cover,more secure v2. CNC motor,sculpture forceful,high precision,long life v3. With polishing process ... Air cooled 6KW12.6AER3218000r/mCuboid Air cooled Water cooling Spindle Motor For Engraving Machine