20PCS Steel 18T 0.3 Modulus Reduction Gears 2.55mm Hole Small Motor Gear
Teeth: 18T, 0.3 Modulus. 20PCS Gears. The gears are fine steel gears processed by precision hobbing, and are the planetary gear of planetary gearboxes. 1 PC Upgrated Engine Sound Simulator Module System Accessories For 1/10 RC Car.