1.Hand air blower 2.aluminum housing&impeller,heavy duty 3.strong structure, low noise,rich wind, no need power ... air(manual) blower has strong structure, small size, low noise,heavy duty, rich wind, elegant and beautiful appearance, no powe resource, easy ... makeing a fire, furnace, kitchen , kitchen trolly for military,light rubber boat blowing, etc.Type Calibre of outlet(mm)Speed rateWeight ...