General description Upgrade your RC car with these high-quality metal differential drive gears. This set includes various gear sizes to enhance the performance of your 12428, 12423, and 12429 models, ensuring durability and reliability during operation. Technical specifications Color: Brown Material: Metal Package Contents: 4 x 30T Differential Gear 8 x 16T Differential Planet Gear 4 x 12T Driving Gear 16 x 10T Differential Planet Gear Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with 12428, 12423, and 12429 RC Car models