100:300 gear ratio for preferred ROF/battery consumption High strength metal alloy build is hard to deform Precision machined for maximum operational smoothness Extremely durable and high quality A great option as an AEG gearbox upgrade Professional installation recommended Improves the workings of your overall gearbox For use with both Ver.2 and Ver.3 Airsoft AEG GearboxesSpecifications: Brand Lancer TacticalBuild Full MetalFunction Gear Set UpgradeCompatibility V2/V3 GearboxesColor STEEL Sector Gear