The first fixing arrangement includes, in particular, {TAIL ~ a first screw} 61 and a first threaded grub screw 62 that engage in {HEAD ~ respective threaded holes} 43, 44 of the main body 41 
The first fixing arrangement includes , in particular , { TAIL ~ a first screw } 61 and a first threaded grub screw 62 that engage in { HEAD ~ respective threaded holes } 43 , 44 of the main body 41
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH