Duralast has been engineering brake hardware to meet the highest of expectations by ensuring every piece of every kit, fits and functions exactly the way it should in every applications braking system.Brakes are designed as a system and all the parts need to work together for best performance. Industry brake service experts agree - when brake friction materials are ready to be replaced, the hardware is too. Changing out your Rubber Pin Boot or Slider Bushing Kit will ensure the guide pins are clean and free from debris for smoother braking.