CNC machined steel Steel alloy build Hard to deform over heavy use Improves the workings of your gearbox CNC gears are stronger and lasts longer than standard AEG gears Allows for very strong spring combinations Replace original gears with upgraded CNC steel gears In the Box 3x Gears Specifications: Brand Lancer Tactical Gear Ratio 32:1 Material SteelCompatibility Fits most Ver. 2 and 3 gearboxesSuitable for springs M125-M180 California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov