Also, the head pipe is formed at {TAIL ~ its front surface} or its both sides of {HEAD ~ its tubular main body portion} with an opening in order to reduce the weight 
Also , the head pipe is formed at { TAIL ~ its front surface } or its both sides of { HEAD ~ its tubular main body portion } with an opening in order to reduce the weight
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH