General description Upgrade your RC car with these high-quality metal differential driving gears. This set includes various gear types suitable for models 12428, 12423, and 12429, ensuring optimal performance and durability. Technical specifications Color: Brown Material: Metal Package Contents: 2 x 30T Differential Gear 4 x 16T Differential Gear 2 x 12T Driving Gear 8 x 10T Differential Gear Measurement allowed error: +/- 1-3 cm Other information