Features: Made of high quality metal material, not easy to rust and break Include two pieces of 40T gear, one piece of 11T and one piece of 37T gear, to meet your needs Easy and convenient to install and remove Nice spare parts to upgrade your RC car, effectively improve the performance of your car Suitable for 1/18 TRX4M RC car Specification: Material: Metal Applicable Model: for 1/18 TRX4M RC Car Quantity: 1 Set Package: 1 Set of Transmi