The frame, {HEAD ~ spool} and ratchet wheel can be defined from {TAIL ~ aluminum alloy} 
The frame , { HEAD ~ spool } and ratchet wheel can be defined from { TAIL ~ aluminum alloy }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL