Right and left AV brake handles /master cylinders

Inside Handle Bar Diameter: 21mm 

The complete AV brake handle and master cylinder set is designed to fit Chinese ATVs, mopeds, scooters, and dirt bikes. This left and right pair features 21 mm (7/8") inside diameter compatibility, fitting standard handlebars on most 50cc–150cc models from TaoTao, Buyang, Coolsport, Lifan, Kazuma, and SUNL. Black handles include integrated sight glasses on both master cylinders for quick fluid level checks and mirror mounts on each side. These handles serve as a direct replacement for worn or damaged brake systems on recreational vehicles sold in the Chinese market.