The door checker also includes {HEAD ~ at least one slider} held within the housing that is in sliding contact with the second portion of the arm inside of {TAIL ~ the housing} 
The door checker also includes { HEAD ~ at least one slider } held within the housing that is in sliding contact with the second portion of the arm inside of { TAIL ~ the housing }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL