The fixing of {TAIL ~ the stirrer blades} 15 on the rotation axle 16 is improved by {HEAD ~ a fixing piece} 17 
The fixing of { TAIL ~ the stirrer blades } 15 on the rotation axle 16 is improved by { HEAD ~ a fixing piece } 17
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH