When you operate the lever, the adjuster pin which hold pushrod in order to piston bear a burden. Therefore the pin hole will be shaved by the friction and the lever will have a backlash. "The titanium pin with a built-in bearings" was developed to prevent the backlash. The built-in small bearings improve the lever durability and operability. In addition, titanium of the material realizes light-weight, high- strength and flexibility. It makes the lever axis strong.