Fit for: Yamaha PW 50 (1981-2023) Should also fit PY50 Chinese copy. Also suitable for copy bikes such Jianshe PY50 Chipmunk 50cc Piwi / Pewee. Specifications: Product Material: Bearing Steel Features: *Good Durability Made from durable material with wear resistant and anti-corrosion that withstands the stresses of riding, leading to a longer lifespan. *Smooth Steering Our high-quality bearings facilitate smooth and precise steering, making it easier to navigate corners and maintain control. *Noise Reduction It operates quietly, reducing unwanted noise during rides and enhancing your riding experience. .