Description: Differential gears, rear metal differential, front metal differential. Made of metal material, which is solid and durable. Fit for WLtoys 12428 / 12423 / 12429; Feiyue FY-01 / FY-02 / FY-03 RC car. Nice replacement accessories for the old or broken one. Easy and convenient to install and remove. Specification: Material: Metal Size Chart: Differential gear - Large bevel gear x 2 (30T), Small bevel gear x 2 (12T), Large planet gear x 4 (16T), Small planet gear x 8 (10T) Rear differential - Length: 25mm, Width: 28mm, Including accessories: Large bevel gear x 1 (30T), Small bevel gear x 1 (12T), Large planet gear x 2 (16T), Small planet gear x 4 (10T), Bearing x 2 (7 x 11 x 3mm), Metal differential box x 1 (18.5 x 18.5mm), with screws Front differential - length: 57mm, Width: 28mm, Including accessories: Large bevel gear x 1 (30T), Small bevel gear x 1 (12T), Large planet gear x 2 (16T), Small planet gear x 4 (10T), Bearing x 2 (7 x 11 x 3mm), Metal differential box x 1 (18.5 x 18.5mm), Differential cup x 2, with screws Package Includes: 2 Set of RC Car Parts Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.