Brand new and high quality.Fine workmanship and perfect style.High Wear-resistant and excellent durability.Easy to install and durable in use.Applicable models: For WLtoys 1/14 144001 144002 1/12 124016 124017 124018 124019 remote control car.Differential: 43mm in total lengthReduction gear: diameter 32mm 44TMotor gear: diameter 20mm 27TUmbrella teeth: 12TGear dust cover: 62.5x10.5x30mmBearing size:7x11x3mmWeight:170gColour: red/purple/blue/silver/gold/titanium colorMaterial: metalPackage Contents:2 * Differential1 * Reduction Gear1 * Motor Gear2 * Umbrella Gear5 * Bearings1 * Motor seat1 * Gear dust cover1 * Battery holderOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.