The TRLREQ 5mm hydraulic brake fluid cap

The TRLREQ 5mm hydraulic brake fluid cap is part of the disc brake system, specifically the housing (or tube) of the 5mm diameter hydraulic disc brake system, belonging to the TRLREQ product line. It has the function of conducting brake fluid from the brake lever (or brake pedal) to the disc brake components, helping to generate braking force to slow down or stop the vehicle.

Brake housing (or brake hose):
This is the part that carries the fluid (usually brake fluid) in the hydraulic brake system. It can be a flexible hose (usually made of rubber or synthetic material) or a rigid hose (usually made of metal).

Hydraulic oil:
This is the incompressible fluid used in the hydraulic brake system to transmit force from the brake lever to the brake components.

5mm:
This is the diameter of the oil hose, an important specification to ensure the proper flow of oil to the brake system.

1 box includes 50m brake fluid hose