The adjustment nut for the handbrake cable on the Citroen 11CV/15CV is a crucial fastening component that ensures precise adjustment of the handbrake cable tension. This sturdy part is specifically designed to meet the classic Citroen model's needs, offering durable performance and reliability. It enables car owners to correctly calibrate their handbrake system, which is vital for the vehicle's safety and efficiency. By preventing wear or breakage, this small yet significant component contributes to the overall functionality and longevity of the braking system in these iconic cars.