Assertion: caliper | /r/CapableOf | extend the piston
Facets:
Source sentences:
text: When the pedal is pressed, brake fluid pressure is pushed through the master cylinder to the caliper, which extends the piston and forces the brake pads against the rotors to slow the vehicle.
text: The calipers operate using brake fluid pressure from the master cylinder and pedal to extend the piston and slow the vehicle.