The tire portions 72 are preferably polyurethane since this material has been found to have {HEAD ~ no additives} which leave {TAIL ~ undesirable deposits} on the paper or other print medium 
leave
The tire portions 72 are preferably polyurethane since this material has been found to have { HEAD ~ no additives } which leave { TAIL ~ undesirable deposits } on the paper or other print medium
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH