ROADBELL - Ingeniously designed to fit Shimano STI* shifter/brake levers. Pull the rubber brake hood off the lever clip, slip the bell base on the clip and tighten, replace the rubber hood on the base clip. - Dome Diameter: 28mm. Domes are solid brass – black or chrome plated. Will fit either left or - right lever. - Colour: Black. - Weight: 26g. ~ The Road Bell will NOT fit on most Shimano STI levers installed on bikes after Spring 2010. The best way to determine if the bell will fit your brake lever is to view the assembly instructions (link above) and see if your lever has a brake lever clip similar to the one in the instructions.