{HEAD ~ The fin} can be removed, moved laterally within {TAIL ~ the slot}, and canted by changing the insert 
{ HEAD ~ The fin } can be removed , moved laterally within { TAIL ~ the slot } , and canted by changing the insert
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH