electric spindle for cnc 1. 3.5 kw aircooling, 18000rpm 2. aircooled 3.for cnc router use, engrave or cut on wood, acrylic electric spindle for cnc1. 3.5 kw aircooling, 18000rpm2. aircooled3.for cnc router use, engrave or cut on wood, acrylic,stainless steel, aluminium, brass ane etc . 4 .comes with spindle collets , connections . Actual weight : 10 kg . Transport: by air or by ocean . Moq: 1set