Feature:1. Modify and Upgrade: The ordinary servo gear for WLtoys XK K110 is 1.9g, and the ordinary servo gear for WLtoys XK K110S is 2g. The servo gear in this accessory package is a modified and upgraded metal servo gear. By purchasing this accessory package, you can upgrade to the K110S metal servogear version.2. Accessory Package: This accessory package saves the hassle of purchasing a K110 aircraft for customers who do not want to buy an additional one, and also adds the joy of modification for customers who have upgraded their K110S aircraft to a metal servo version.3. Exquisite Workmanship: Professional manufacturing, craftsmanship, and high accuracy help provide stable performance to meet your various needs.4. Product Material: RC helicopter parts for WLtoys XK K110 are made of plastic and steel material, it is sturdy and durable, not easy to damage.5. Applicable Model: RC helicopter spare parts are suitable for WLtoys XK K110, K110S rc helicopter. This is a perfect upgrade component.Specification:Item Type: RC Helicopter Modification and Upgrade Accessory KitMain Material: PlasticServo Gear Material: SteelWeight: Approx. 54g / 1.9ozApplicable Model: for WLtoys XK K110, K110S RC Helicopter.Package List:3 x Servo Gear 3 x Servo Arm 3 x Screw 1 x Servo Hood 1 x Servo Pressure Plate 1 x Servo Base