Feature:1. Perfect 1/28 RC differential mechanism, fits for WLtoys K969 K979 K989 K999 P929 P939 remote control Car.2. Adjustable tightness, when tightening, used as for K969‑29drifting straight shaft, when loosening, used as for K989‑26 ball differential.3. Easy and convenient for installation, it is designed to upgrade your car, wonderful replacement for the old or broken one, directly fitment.4. Made of high quality plastic material, durable, practical and not easy to damage, can serve for a long time.5. Fine workmanship, practical RC car modification accessory, enhancing your RC car overall performance.Specification:Item Type: Differential MechanismShell Material: PlasticColor: BlackQuantity: 1pcsType: RC accessoriesFitment: Fit for WLtoys K969 K979 K989 K999 P929 P939 RC car Package List:1 x Differential MechanismNote:Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.