The braking elements comprise {TAIL ~ at least an elastic washer} for providing axially prestressed mutual contact of the friction surfaces of {HEAD ~ the discs} 
The braking elements comprise { TAIL ~ at least an elastic washer } for providing axially prestressed mutual contact of the friction surfaces of { HEAD ~ the discs }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD