Each of {TAIL ~ the shaft slots} 47 c is formed in a respective slide wing 47 b at an incline of {HEAD ~ 45°} 
Each of { TAIL ~ the shaft slots } 47 c is formed in a respective slide wing 47 b at an incline of { HEAD ~ 45 ° }
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD