This set of spare parts includes metal differential, pinion gear, main gears, motor gear, and screw. The gears are made of high-quality metal, ensuring durability and practicality. They are perfect replacements for old or damaged parts. Easy to install and remove, these gears are suitable for 1/6 scale RC model cars such as 16101, 16102, 16201, and 16103. The package contains 2 RC car differentials, 2 pinion gears, 1 main gear, 1 motor gear, and 1 screw, all made of metal and measuring 4cm x 3cm (1.57 inches x 1.18 inches).