a pusher inserted in {HEAD ~ the second housing} for {TAIL ~ a slide}, the pusher being configured to be engaged with the second engagement part, wherein 
for
a pusher inserted in { HEAD ~ the second housing } for { TAIL ~ a slide } , the pusher being configured to be engaged with the second engagement part , wherein
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH