Item Type: 21T Servo Arm Material: Aluminum Alloy Product Size: Approx.23 x 8mm / 0.9 x 0.3in Applicability: Suitable For MD922, MD933 And Other Servos 1Aluminum Alloy Material: Made of aluminum alloy material, durable, long service life, high accuracy servo arm, first class surface treatment. 2CNC Machining: Accurate size, stable performance, high strength, wear resistance, not easy to deform. 3Applicability: The 21T steering arm is specially designed for the MD922, MD933 steering gear of the remote control car, which can effectively transmit power and accurately execute the steering gear instructions. 4Elegant Look: The surface is anodized to give your RC car an elegant look. Small size, light weight, easy to install and remove. 5Easy Installation And Disassembly: The original plastic parts or damaged parts can be directly replaced for higher strength.1 x 21T Servo Arm1. Due to manual measurement, 1?3mm error is allowed, thank you! 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.