These toy car axles are crafted from practical metal, ensuring long-lasting performance for your DIY projects. Ideal for STEM model building, these components provide a reliable foundation for constructing toy cars and other mechanical models. Their practical design makes them suitable for replacing worn-out parts, enhancing the functionality and longevity of your creations. Features - Color: Silver -Material:Iron - Size: 3.00X0.20X0.20cm/1.18X0.08X0.08in -Diameter: 2 mm -High precision machining: Round rod ensures suitable fit between toy car axles and hubs, enhancing model driving stability -Practical iron material: Shaft Bars are practical and wear resistant, effectively extending the lifespan of your stem models and reducing maintenance frequency -Wide compatibility: Wheel Axles compatible with various stem models and toy cars, easily replacing old axles to refresh your models and improve play experience -Easy installation: simple design requires no professional tools, allowing quick upgrades to your model's performance, ideal for diy enthusiasts -Wide application: widely used in diy stem toy, children's toys, and model collections, inspiring creativity and developing hands-on skills Package list: 50 car rods