Description: Differential gears, rear metal differential, front metal differential. Made of high quality 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 *2 (30T), Small bevel gear *2 (12T), Large planet gear *4 (16T), Small planet gear *8 (10T) Rear differential - Length: 25mm, Width: 28mm, Including accessories: Large bevel gear *1 (30T), Small bevel gear *1 (12T), Large planet gear *2 (16T), Small planet gear *4 (10T), Bearing *2 (7*11*3mm), Metal differential box *1 (18.5*18.5mm), with screws Front differential - length: 57mm, Width: 28mm, Including accessories: Large bevel gear *1 (30T), Small bevel gear *1 (12T), Large planet gear *2 (16T), Small planet gear *4 (10T), Bearing *2 (7*11*3mm), Metal differential box *1 (18.5*18.5mm), Differential cup*2, with screws Package Includes: 2 Set of RC Car Parts