{TAIL ~ Combination} 1, wherein the Shore D hardness of {HEAD ~ the plastic material} is approximately 15 25 
{ TAIL ~ Combination } 1 , wherein the Shore D hardness of { HEAD ~ the plastic material } is approximately 15 25
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH