Feature:1. Wide Applicability: It has wide applicability, and it is suitable for WLtoys V977 XK K110 K120, this is undoubtedly a good remote control helicopter replacement parts.2. High Performance: It can replace old or damaged parts of the remote control helicopter, which greatly improves the performance of the remote control helicopter.3. Manufacturing Material: The CNC machine is made of aluminum alloy material, which is durable and strong, lightweight and will not burden the airplane.4. Simple Operation: Simple to operate, easy to install and disassemble. Without any difficult requirements even though you use it for the first time.5. High Simulation: The rotor clip is high simulation, which make you remote control helicopter more lifelike. Easy to use and fine workmanship.Specification:Item Type:Main Blade ClipWeight: Approx.4g / 0.1ozMaterial: Aluminum AlloyColor: BlackApplicability: Suitable For WLtoys V977 XK K110S K120 K110 And Other Remote Control HelicoptersPackage List:2 x Rotor Clip2 x Screw