The apparatus includes {HEAD ~ a body structure} having a rotational axis, {TAIL ~ a discrete hollow structure} and at least one dampening member 
having
The apparatus includes { HEAD ~ a body structure } having a rotational axis , { TAIL ~ a discrete hollow structure } and at least one dampening member
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH