FIG 5 shows the protective ring 4 mounted around an inner barrel 1 inside the housing 2′ of {HEAD ~ another structure} of {TAIL ~ hot air} blowing gun 
of
FIG 5 shows the protective ring 4 mounted around an inner barrel 1 inside the housing 2′ of { HEAD ~ another structure } of { TAIL ~ hot air } blowing gun
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH