The Hitec HS-625/645/5625/5645MG/5665MH/5685MH MP 1st Gear (3pcs) is a set of three gears designed as replacement parts for specific servo models. These gears are essential components within the servo mechanism, ensuring optimal performance and longevity of the device. Suitable for use in various servo applications, this gear set is categorized under Servos Parts & Accessories, providing necessary support for maintaining and repairing servo units.