said {TAIL ~ lower surface} of said clasp lower part being disposed in {HEAD ~ a third plane} , and said edges of said open top side of said clasp lower part being disposed in a fourth plane , said fourth plane being inclined relative to said third plane  
said { TAIL ~ lower surface } of said clasp lower part being disposed in { HEAD ~ a third plane } , and said edges of said open top side of said clasp lower part being disposed in a fourth plane , said fourth plane being inclined relative to said third plane
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH