Features: brand new and high quality Easy and convenient to install and remove. Fit to your RC car perfectly. High detailed simulation, derived from real car design to increase the authenticity of the RC car. Made of high quality aluminum alloy material, durable and wear-resistant. Nice spare parts to upgrade your RC car, effectively improve the performance of your car. Specifications: Material:Aluminum Alloy Color: Blue/Purple/Red Inner Diameter: 18mm/0.7 inches Outer Diameter: 30mm/1.18 inches 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. Package includes: 1x Simulation Brake Disc