The system may also include {HEAD ~ a locking mechanism} configured to retain {TAIL ~ a cutting tool} within the reciprocating assembly 
The system may also include { HEAD ~ a locking mechanism } configured to retain { TAIL ~ a cutting tool } within the reciprocating assembly
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH