Answer:
This is to optimize storage and transport.
Explanation:
Which one if you want independent variable meaning that means variable (often denoted by x ) whose variation does not depend on that of another.
The part that causes the disc caliper piston to retract when the brakes are released is the square-cut O-ring.
The square cut seal is the most important part of a disc brake caliper, for keeping the brake behind the piston so that when you step on the brake pedal, it releases a pressure that applied to the piston which in return applies the pad to the rotor.
