{HEAD ~ The secondary filament} 18 and {TAIL ~ the tertiary filament} 20 are preferably lower wattage, up to a maximum of 15 watts, in order to keep the filaments 18 and 20 from overheating and damaging the colored sleeves 22 
{ HEAD ~ The secondary filament } 18 and { TAIL ~ the tertiary filament } 20 are preferably lower wattage , up to a maximum of 15 watts , in order to keep the filaments 18 and 20 from overheating and damaging the colored sleeves 22
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH