An upper bladeguard is immovably secured to {TAIL ~ the housing} and has {HEAD ~ a rear wall} defining an arcuate slot 
An upper bladeguard is immovably secured to { TAIL ~ the housing } and has { HEAD ~ a rear wall } defining an arcuate slot
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH