Here are some key Features and Considerations:

Servo Expander/Extender Functionality: These devices are designed to modify the behavior of the servo motor by extending or adjusting its range of motion. They can be used to increase or decrease the steering throw, for example, in an RC car or airplane.

Steering Gear Angle Extender: The term "Steering Gear Angle Extender" suggests a focus on modifying the steering mechanism's angle of movement. This can be useful for fine-tuning the steering response of an RC vehicle.

Portable and DIY RC Model Parts: These devices are often compact and portable, making them suitable for use in various RC models. They may be designed to be easily incorporated into DIY (Do It Yourself) projects, allowing RC enthusiasts to customize and optimize their models.

Simple to Operate: The emphasis on being "simple to operate" suggests that these devices are user-friendly and don't require complex setup procedures. This is beneficial for hobbyists who want an uncomplicated solution for adjusting servo behavior.

Compatibility: Servo expanders and angle extenders are typically compatible with standard RC servos, both analog and digital. They may be used with various brands and models of servos commonly found in the RC hobby.