Chain Adjuster For Sur Ron Light Bee Fitment: The dirt bike axle block fit Sur-Ron S/X, Segway X160/X260.Adjuster: The surron axle block assists rear wheel positioning, improves high speed stability, and reduces chain and sprocket wear. The white part of the surface is a laser-marked scale for precise positioning, which is used to adjust the tightness of the chain.Material: The surron chain adjuster is made of high quality aluminum alloy, light material, high strength, not easy to oxidation rust, long service life.CNC: The surron chain adjuster is made of CNC process, digital processing, accurate size. Integrated forming, the overall strength is higher.Anodizing: The sur ron axle block surface has been hard anodized. The oxidized film on the surface not only makes the overall color more bright and uniform, which can better decorate the SurRon, but also improves the overall hardness and air isolation.