The sensing blocks of the slide block of {HEAD ~ the second advancing seat} can be adjusted in position according to {TAIL ~ the tread size} of a tire to be shredded 
The sensing blocks of the slide block of { HEAD ~ the second advancing seat } can be adjusted in position according to { TAIL ~ the tread size } of a tire to be shredded
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH