Features: brand new and high quality Aside from the great looks, aluminum alloy will not flex as much as plastic under stress or during high ambient temperatures. Equipped with front C hub caster mount to lower the car's center of gravity, lighten and concentrate the vehicle's gravity, and increase stability. Made of good quality aluminum alloy material, rustproof, wear resistant, durable, stable and reliable, possess long service life. Refined appearance and perfect style bring better performance and reliability, making it more for RC for cars. The innovative design replaces the original plastic parts of for Gen8, exquisite and has an excellent analog appearance, very cool. Specifications: Material:Metal Color:Black/Red/Silver Size:Apporx.5.4x2.3x2.1cm/2.12x0.9x0.83 inches Application: For Gen8 RC Crawler Package Includes: 1 Pair Front C Hub Caster note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.