A tape cassette 1, wherein {HEAD ~ said weighting elements} are made of {TAIL ~ a single metal material} 
A tape cassette 1 , wherein { HEAD ~ said weighting elements } are made of { TAIL ~ a single metal material }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL