The roller receives the heat emission part and has at least one opening to provide {TAIL ~ heat} to {HEAD ~ a target}  
The roller receives the heat emission part and has at least one opening to provide { TAIL ~ heat } to { HEAD ~ a target }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH