The insert, , and {HEAD ~ fin} , are secured via grub screws, , tightened by {TAIL ~ Allen key}  
The insert , , and { HEAD ~ fin } , are secured via grub screws , , tightened by { TAIL ~ Allen key }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH