The Raptors Airsoft ZCI RTV Gears Set is a precision-machined upgrade component that can help improve the performance and reliability of your airsoft gun's gearbox. It includes a set of standard torque 18:1 gears that can replace the stock gears in your airsoft gun's gearbox. These gears are made from high-quality materials and are precision-machined for optimal performance. They can help improve the rate of fire, trigger response, and overall performance of your airsoft gun.