One side of the runner 44 is provided with {TAIL ~ a fastening device} 5 having {HEAD ~ a protruding button} 51 
One side of the runner 44 is provided with { TAIL ~ a fastening device } 5 having { HEAD ~ a protruding button } 51
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH