said upper surface of {TAIL ~ said clasp upper part} being disposed in a first plane , and said edges of said open underside of {HEAD ~ said clasp upper part} being disposed in a second plane , said first plane being inclined relative to said second plane  
said upper surface of { TAIL ~ said clasp upper part } being disposed in a first plane , and said edges of said open underside of { HEAD ~ said clasp upper part } being disposed in a second plane , said first plane being inclined relative to said second plane
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH