A boot 1, wherein {HEAD ~ the said end} of {TAIL ~ the lever} is formed as a round ended lip for engagement with said fixed seat 
of
A boot 1 , wherein { HEAD ~ the said end } of { TAIL ~ the lever } is formed as a round ended lip for engagement with said fixed seat
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH