... ,Rotating TV antenna,etc.4) Scientiific and teching devices:Rotating electric models,Electric curtains,etc.5) Medical equipments:Stirrer,pump,etc.6 ... ) Industrial area:Electric transit instrument,etc. 2.Feature:1) Stable speed2) Long Lifespan3 ... ) Outline Size:Diametr:φ49.0 mm,Height:18.5mm,21mm, 24 mm8) Package:120pcs/Carton,380 x 280 x 320 mm ...