The slave cylinder carries a piston, and the slave cylinder or piston is connected to {HEAD ~ the callipers} for applying {TAIL ~ the brakes} 
The slave cylinder carries a piston , and the slave cylinder or piston is connected to { HEAD ~ the callipers } for applying { TAIL ~ the brakes }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL